CN115708255A - Antenna, antenna array and electronic equipment - Google Patents

Abstract

The present application provides an antenna, an antenna array and electronic equipment. The antenna includes a radiator and a first coupling stub. The radiator has a first feed point for receiving a first radio frequency signal, and the radiator works in a first resonance mode according to the first radio frequency signal. The first coupling stub has a second feed point for receiving a second radio frequency signal, the first coupling stub is coupled with the radiator, and couples the second radio frequency signal to The radiator, the radiator works in a second resonance mode according to the second radio frequency signal, wherein the second resonance mode is different from the first resonance mode. The antenna provided by the present application has better isolation of electromagnetic wave signals transmitted and received according to the first resonant mode and the second resonant mode.

Description

Antennas, antenna arrays and electronic devices

technical field

The present application relates to the technical field of communications, and in particular to an antenna, an antenna array and electronic equipment.

Background technique

With the development of technology, the popularity of electronic devices with communication functions such as mobile phones is getting higher and higher, and their functions are becoming more and more powerful. Antennas are usually included in electronic equipment to realize the communication function between the electronic equipment and other equipment. However, the isolation of the antenna in the electronic equipment in the related art is relatively poor, which leads to insufficient communication performance when the antenna is used for communication.

Contents of the invention

In a first aspect, the present application provides an antenna, and the antenna includes:

a radiator, the radiator has a first feed point for receiving a first radio frequency signal, and the radiator works in a first resonance mode according to the first radio frequency signal; and

A first coupling branch, the first coupling branch has a second feeding point, the second feeding point is used to receive a second radio frequency signal, the first coupling branch is coupled with the radiator, and the first coupling branch is coupled to the radiator. Two radio frequency signals are coupled to the radiator, and the radiator works in a second resonance mode according to the second radio frequency signal, wherein the second resonance mode is different from the first resonance mode.

In a second aspect, the present application provides an antenna array, where the antenna array includes multiple antennas as described in the first aspect, and the multiple antennas are arranged according to a preset rule.

In a third aspect, the present application provides an electronic device, where the electronic device includes the antenna described in the first aspect; or, the electronic device includes the antenna array described in the second aspect.

In the antenna provided in the implementation mode of the application, by directly feeding the first radio frequency signal to the radiator, coupling and feeding the second radio frequency signal through the coupling between the first coupling stub and the radiator Electricity to the radiator, thereby exciting the first resonance mode and the second resonance mode of different resonance modes, so that the electromagnetic wave signal sent and received by the radiator according to the first resonance mode and the radiator The isolation of electromagnetic wave signals transmitted and received according to the second resonance mode is relatively good. Therefore, the communication performance of the antenna is better.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the implementation manner. Obviously, the drawings in the following description are some implementation manners of the application, and are common to those skilled in the art. As far as the skilled person is concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

FIG. 1 is a schematic diagram of an antenna provided in an embodiment of the present application;

FIG. 2 is a schematic diagram of a radiator in the antenna shown in FIG. 1;

FIG. 3 is a schematic diagram of a radiator in an antenna shown in another embodiment of the present application;

FIG. 4 is a schematic diagram of an antenna provided in another embodiment of the present application;

5 is a schematic diagram of the direction of the first current generated by the radiator in the antenna shown in FIG. 2 in the first half cycle of the first resonance mode;

Fig. 6 is a schematic diagram of the waveform of the first current in Fig. 5;

7 is a schematic diagram of the direction of the first current generated by the radiator in the antenna shown in FIG. 2 in the second half cycle of the first resonance mode;

Fig. 8 is a schematic diagram of the waveform of the first current in Fig. 7;

9 is a schematic diagram of the direction of the second current generated by the radiator in the antenna shown in FIG. 1 in the first half cycle of the second resonance mode;

Fig. 10 is a schematic diagram of the waveform of the second current in Fig. 9;

11 is a schematic diagram of the direction of the second current generated by the radiator in the antenna shown in FIG. 1 in the second half cycle of the second resonance mode;

Fig. 12 is a schematic diagram of the waveform of the second current in Fig. 11;

FIG. 13 is a schematic diagram of an antenna provided in another embodiment of the present application;

FIG. 14 is a schematic structural diagram of a first coupling stub in the antenna shown in FIG. 13;

FIG. 15 is a schematic diagram of a second coupling stub in the antenna shown in FIG. 13;

FIG. 16 is a schematic diagram of an antenna provided in another embodiment of the present application;

FIG. 17 is a schematic structural diagram of a first coupling stub in the antenna shown in FIG. 16;

FIG. 18 is a schematic diagram of a second coupling stub in the antenna shown in FIG. 16;

FIG. 19 is a schematic diagram of an antenna provided in another embodiment of the present application;

FIG. 20 is a schematic structural diagram of a first coupling stub in the antenna shown in FIG. 19;

FIG. 21 is a schematic diagram of a second coupling stub in the antenna shown in FIG. 19;

FIG. 22 is a schematic diagram of an antenna provided in yet another embodiment of the present application;

FIG. 23 is a schematic diagram of an antenna provided in yet another embodiment of the present application;

FIG. 24 is a schematic diagram of an antenna provided in yet another embodiment of the present application;

FIG. 25 is a schematic diagram of an antenna provided in another embodiment of the present application;

FIG. 26 is a schematic diagram of an antenna provided in another embodiment of the present application;

FIG. 27 is a schematic simulation diagram of the antenna shown in FIG. 1;

FIG. 28 is a schematic simulation diagram of the antenna shown in FIG. 13;

Fig. 29 is a schematic diagram of current simulation when the antenna shown in Fig. 13 is in the first resonance mode;

Fig. 30 is a schematic diagram of current simulation when the antenna shown in Fig. 13 is in the second resonance mode;

Fig. 31 is a directional diagram when the antenna shown in Fig. 13 is loaded with a first radio frequency signal alone;

Fig. 32 is a directional diagram when the antenna shown in Fig. 13 is loaded with a second radio frequency signal alone;

Fig. 33 is a directional diagram of the antenna when the antenna shown in Fig. 13 is loaded with the first radio frequency signal and the second radio frequency signal in the same phase;

Figure 34 is a directional diagram of the antenna when the phase of the first radio frequency signal loaded by the antenna shown in Figure 13 is greater than the phase of the second radio frequency signal by 90°;

FIG. 35 is a schematic diagram of an antenna array provided in an embodiment of the present application;

Fig. 36 is a schematic perspective view of the three-dimensional structure of the electronic device provided by the present application;

FIG. 37 is a cross-sectional view of the electronic device provided in FIG. 36 along line I-I.

Label description:

Electronic equipment 1, antenna array 10, antenna 100, radiator 110, first feeding part 111, first radiating part 112, second radiating part 113, first feeding point P1, first radiating branch 112a, first free End 1121, second free end 1131, second radiating branch 113a, connection point CN0, first connection point CN1, second connection point CN2, first coupling branch 120, second feeding point P2, second feeding part 121 , the second coupling part 122, the second coupling stub 130, the second coupling part 131, the ground part 132, the first matching circuit M1, the second matching circuit M2, the ground 140, the splitter 150, the input terminal 151, the first Output terminal 152, second output terminal 153, phase shifter 160, control chip 170, middle frame 30, frame body 310, frame 320, screen 40, circuit board 50, battery cover 60, side 11a, first direction D1 , the second direction D2.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Reference herein to "an embodiment" or "implementation" means that a particular feature, structure or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of an antenna provided in an embodiment of the present application. The antenna 100 includes a radiator 110 and a first coupling stub 120 . The radiator 110 has a first feed point P1 for receiving a first radio frequency signal, and the radiator 110 works in a first resonance mode according to the first radio frequency signal. The first coupling branch 120 has a second feeding point P2, the second feeding point P2 is used to receive a second radio frequency signal, the first coupling branch 120 is coupled with the radiator 110, and the first Two radio frequency signals are coupled to the radiator 110, and the radiator 110 operates in a second resonance mode according to the second radio frequency signal, wherein the second resonance mode is different from the first resonance mode.

It should be noted that the terms "first" and "second" in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The radiator 110 may be, but not limited to, a flexible printed circuit (Flexible Printed Circuit, FPC) antenna radiator, or a laser direct structuring (Laser Direct Structuring, LDS) antenna radiator, or a printing direct structuring (Print Direct Structuring) antenna radiator. , PDS) antenna radiator, or a metal branch. The shape and length of the radiator 110 shown in the schematic diagram of this embodiment is a schematic, and the shape and length of the radiator 110 can be designed according to the electromagnetic wave signals sent and received by the radiator 110, as long as the radiator 110 satisfies the 110 can support the transmission and reception of electromagnetic wave signals in corresponding frequency bands. The shape and length of the radiator 110 shown in this schematic diagram should not be construed as a limitation to the antenna 100 provided in the embodiment of the present application.

The first coupling stub 120 may be, but not limited to, a coupling stub formed as a conductive stub in a flexible circuit board, or a laser direct forming coupling stub, or a printing direct forming coupling direct, or a metal stub.

The first coupling branch 120 is coupled to the radiator 110 , and then the second radio frequency signal is coupled to the radiator 110 through the coupling effect between the first coupling branch 120 and the radiator 110 . Specifically, the first coupling branch 120 is opposite to the radiator 110 and arranged at intervals, and forms a coupling capacitance. In one embodiment, the gap size d between the first coupling stub 120 and the radiator 110 is: 0.5mm≤d≤2mm. It can be understood that for the antenna 100, the gap size d between the first coupling stub 120 and the radiator 110 is selected as the above-mentioned range, so as to ensure that the radiator 110 and the first coupling stub 120 There is a good coupling effect between them. It can be understood that, in other implementation manners, the gap size d between the first coupling stub 120 and the radiator 110 may not be in the above range, as long as the first coupling stub 120 and the radiator are satisfied. 110 to form a coupling capacitor.

The so-called resonance mode is also called resonance mode. The second resonant mode is different from the first resonant mode, therefore, when the radiator 110 transmits and receives the electromagnetic wave signal of the first frequency band according to the first resonant mode, it is different from the radiator 110 according to the second resonant mode. The isolation degree is better when the mode transmits and receives the electromagnetic wave signal of the second frequency band. That is, when the antenna radiator transmits and receives electromagnetic wave signals in the first frequency band according to the first resonance mode, there is little interference with the radiator 110 when transmitting and receiving electromagnetic wave signals in the second frequency band according to the second resonance mode. Specifically, in this embodiment, the radiator 110 transmits and receives electromagnetic wave signals in a first frequency band according to the first resonance mode; the radiator 110 transmits and receives electromagnetic wave signals in a second frequency band according to the second resonance mode. The first resonant mode is different from the second resonant mode, therefore, the radiator 110 has better isolation when transmitting and receiving electromagnetic wave signals in the first frequency band and when the radiator 110 is transmitting and receiving electromagnetic wave signals in the second frequency band. It should be noted that the radiator 110 works simultaneously to transmit and receive electromagnetic wave signals in the first frequency band according to the first resonance mode and the radiator 110 to transmit and receive electromagnetic wave signals in the second frequency band according to the second resonance mode.

It can be understood that, in one embodiment, the first frequency band is the same as the second frequency band, that is, the antenna radiator transmits and receives electromagnetic wave signals in the same frequency band according to the first resonance mode and the second resonance mode. In other implementation manners, the first frequency band is different from the second frequency band, that is, the radiator 110 transmits and receives electromagnetic wave signals of different frequency bands according to the first resonance mode and the second resonance mode. Regardless of whether the first frequency band is the same as the second frequency band, as long as the first resonance mode is different from the second resonance mode, the radiator 110 can transmit and receive electromagnetic wave signals in the first frequency band according to the first resonance mode. When transmitting and receiving electromagnetic wave signals in the second frequency band with the radiator 110 according to the second resonant mode, there is a high degree of isolation. In the following implementation manners, description will be made by taking the same as the first frequency band and the second frequency band as an example. When the radiator 110 transmits and receives electromagnetic wave signals in the first frequency band according to the first resonance mode, and transmits and receives electromagnetic wave signals in the second frequency band according to the second resonance mode, that is, two radiators with high isolation are realized on one radiator 110 . Antenna designs for different frequency bands do not require two antennas to transmit and receive electromagnetic wave signals in the first frequency band and the second frequency band. Therefore, the structure of the antenna 100 of the present application is relatively compact. When the first frequency band is the same as the second frequency band, a radiator 110 realizes a dual-antenna design in the same frequency band with high isolation, without requiring two antennas to realize the transmission and reception of two electromagnetic wave signals in the same frequency band, Therefore, the structure of the antenna 100 of the present application is relatively compact. The antenna 100 provided in the embodiment of the present application directly feeds the first radio frequency signal to the radiator 110, and passes the second radio frequency signal between the first coupling branch 120 and the radiator 110. The coupling effect couples and feeds power to the radiator 110, thereby exciting the first resonant mode and the second resonant mode of its different resonant modes, so that the radiator 110 transmits and receives data according to the first resonant mode. The isolation between the electromagnetic wave signal and the electromagnetic wave signal transmitted and received by the radiator 110 according to the second resonant mode is relatively good. Therefore, the communication performance of the antenna 100 is better.

In an implementation manner, the frequency bands of electromagnetic wave signals supported by the first resonance mode and the second resonance mode are the same, and the first resonance mode includes two quarter-wavelength resonance modes, and the second resonance mode is a half-wavelength resonant mode.

The frequency bands of the electromagnetic wave signals supported by the first resonant mode and the second resonant mode are the same, therefore, the wavelengths of the electromagnetic wave signals supported by the first resonant mode and the second resonant mode are the same, denoted as λ ₀ , so The first resonance mode includes two quarter-wavelength resonance modes, and the second resonance mode includes a half-wavelength resonance mode, that is, the first resonance mode includes two λ ₀ /4 resonance modes, and the second The resonance modes include the λ ₀ /2 resonance mode.

Please also refer to FIG. 2 , which is a schematic diagram of the radiator in the antenna shown in FIG. 1 . The radiator 110 includes a first feeding part 111 , a first radiating part 112 and a second radiating part 113 . The first feeding point P1 is located in the first feeding part 111 . The first radiation part 112 is connected to the first feeding part 111 and coupled with the first coupling stub 120 . The second radiating part 113 is connected to the first feeding part 111 and the first radiating part 112, the first radiating part 112 is used to support one quarter-wavelength resonant mode, and the second The radiation part 113 is used to support another quarter-wavelength resonance mode, and the first radiation part 112 and the second radiation part 113 are used to support the second resonance mode together.

The first feeder 111 is a part of the radiator 110 where the first radio frequency signal is fed, and the first feeder 111 is straight, or similar to a straight, or other shapes, such as For wavy etc. In this embodiment, the shape of the first power feeding part 111 is not limited. The first feeding point P1 is located on the first feeding part 111 , and the first feeding point P1 is used for receiving a first radio frequency signal.

In the schematic diagram of this embodiment, the shape of the first radiating portion 112 and the second radiating portion 113 is taken as an example for illustration. It can be understood that in other embodiments, the first radiating portion The shapes of the part 112 and the second radiating part 113 can also be other shapes, for example, the first radiating part 112 and the second radiating part 113 have a plurality of connected radiating branches. The shapes of the first radiating portion 112 and the second radiating portion 113 shown in this embodiment should not be construed as limiting the radiator 110 provided in this embodiment. The first radiating part 112 is connected to the first feeding part 111 , therefore, the first radio frequency signal can be transmitted to the first radiating part 112 via the first feeding part 111 . The second radiating part 113 is connected to the first feeding part 111 , so the first radio frequency signal can be transmitted to the second radiating part 113 via the first feeding part 111 . The second radiating part 113 is also connected to the first radiating part 112 , so the current of the first radio frequency signal can flow on the first radiating part 112 and the second radiating part 113 . In this embodiment, the first radiation part 112 is bent and connected to the first power feeding part 111 , and the second radiation part 113 is connected to the first power feeding part 111 by bending. In this embodiment, the extension directions of the first radiation portion 112 and the second radiation portion 113 are on the same straight line. The extension of the first radiating part 112 is defined as the direction from the end of the first radiating part 112 connected to the first feeding part 111 to the end of the first radiating part 112 facing away from the first feeding part 111 The direction is denoted as the first direction D1. If the end of the second radiating part 113 connected to the first power feeding part 111 points to the end of the second radiating part 113 away from the first power feeding part 111, the direction of the second radiating part 113 is As for the extending direction, the extending direction of the second radiation portion 113 is opposite to the first direction D1. Of course, if the end of the second radiating portion 113 facing away from the first feeding portion 111 points to the end of the second radiating portion 113 adjacent to the first feeding portion 111 as the direction of the second radiating portion 113 , the extending direction of the second radiating portion 113 is the same as the extending direction of the first radiating portion 112 . In this embodiment and the following embodiments, the end of the second radiating portion 113 away from the first feeding portion 111 points to the second radiating portion 113 adjacent to the first feeding portion 111 The direction of one end of the second radiating portion 113 is taken as an example for description; in other words, in this embodiment and the following embodiments, the second radiating portion 113 and the first The extending direction of the radiation part 112 is the same for description. In this embodiment, the first direction D1 is perpendicular to the second direction D2, and the extension direction of the first power feeding part 111 is marked as the second direction D2. It can be understood that, in other implementation manners, the extending directions of the first radiating portion 112 and the second radiating portion 113 may also be different. Alternatively, in other implementation manners, even if the extending directions of the first radiating portion 112 and the second radiating portion 113 are the same, the first direction D1 may not be perpendicular to the second direction D2.

In this embodiment, the second radiating portion 113 and the first radiating portion 112 are symmetrical with respect to the first feeding portion 111 . Referring to FIG. 2 , it is illustrated by taking the centerline of the first feeding part 111 as L1 as an example, and the first radiating part 112 and the second radiating part 113 are symmetrical about the centerline L1 .

When the second radiating part 113 and the first radiating part 112 are symmetrical about the first feeding part 111, the radiator 110 transmits and receives the electromagnetic wave signal of the first frequency band with the radiator 110 for the second The isolation of electromagnetic wave signals in the frequency band is better. Please refer to FIG. 2 . In FIG. 2 , the first radiating portion 112 and the second radiating portion 113 each include a radiating stub.

Please also refer to FIG. 3 . FIG. 3 is a schematic diagram of a radiator in an antenna shown in another embodiment of the present application. In FIG. 3 , the first radiating portion 112 includes two bent and connected first radiating branches 112a, and correspondingly, the second radiating portion 113 and the first radiating portion 112 are 111 is symmetrical, that is, the second radiating portion 113 also includes second radiating branches 113a that are bent and connected.

It can be understood that the structural shape of the radiator 110 in the antenna 100 shown in FIG. 2 and FIG. An embodiment in which the electric part 111 is symmetrical, the structure of the radiator 110 can also be in other forms, as long as the first radiating part 112 and the second radiating part 113 are symmetrical with respect to the first feeding part 111 That's it.

Please refer to FIG. 4 , which is a schematic diagram of an antenna provided in another embodiment of the present application. The second radiating portion 113 and the first radiating portion 112 are asymmetrical with respect to the first feeding portion 111 . Taking the centerline of the first feeding part 111 as L1 as an example to illustrate, the first radiation part 112 and the second radiation part 113 are asymmetrical with respect to the centerline L1. In the schematic diagram of this embodiment, the length of the first radiating portion 112 is greater than the length of the second radiating portion 113 as an example. It can be understood that in other embodiments, the first radiating portion 112 The length of can also be less than the length of the second radiation part 113 . When the second radiating part 113 and the first radiating part 112 are asymmetrical with respect to the first feeding part 111, the antenna 100 further includes at least one of the first matching circuit M1 and the second matching circuit M2 kind. When the antenna 110 includes the first matching circuit M1, the first matching circuit M1 is electrically connected to the first radiating part 112, and is used to adjust the resonant frequency of the first radiating part 112 to be equal to a preset frequency point. When the antenna 110 includes the second matching circuit M2, the second matching circuit M2 is electrically connected to the second radiating part 113, and is used to adjust the resonant frequency of the second radiating part 113 to be equal to the preset frequency point, wherein the preset frequency point is a resonant frequency point when the second radiating part 113 and the first radiating part 112 are symmetrical with respect to the first feeding part 111 . In the schematic diagram of this embodiment, it is illustrated by taking the antenna 100 including the first matching circuit M1 and the second matching circuit M2 as an example.

When the second radiating part 113 is asymmetrical to the first radiating part 112, the first radiating part 112 will also support a quarter-wavelength resonance mode, and the second radiating part 113 will also support Another quarter-wavelength resonant mode. However, compared to when the second radiation portion 113 is symmetrical to the first radiation portion 112, when the second radiation portion 113 is asymmetrical to the first radiation portion 112, the first radiation portion The resonant frequency point of the electromagnetic wave signal supported by 112 and the resonant frequency point of the electromagnetic wave signal supported by the second radiation part 113 will deviate, which will cause the radiation body 110 to transmit and receive the electromagnetic wave signal according to the first resonant mode. The isolation of the radiator 110 becomes slightly worse when transmitting and receiving electromagnetic wave signals according to the second resonance mode. For example, when the first radiating part 112 and the second radiating part 113 are symmetrical, the resonant frequency points of the first radiating part 112 and the second radiating part 113 are both f ₁ . However, when the second radiating part 113 is asymmetrical to the first radiating part 112, the resonant frequency point of the electromagnetic wave signal supported by the first radiating part 112 is f ₁ +Δf ₁ , where f ₁ + Δf ₁ >f ₁ ; correspondingly, the resonant frequency point of the electromagnetic wave signal supported by the second radiation part 113 is f ₁ -Δf ₂ , wherein f ₁ -Δf ₂ <f ₁ . It should be noted that the Δf ₁ describes the difference between the first radiating part 112 and the resonant frequency f ₁ , and when the second radiating part 113 is asymmetrical to the first radiating part 112, the The resonant frequency point of the electromagnetic wave signal supported by the first radiating part 112 is f ₁ +Δf ₁ , which means that when the second radiating part 113 is asymmetrical to the first radiating part 112, the first radiating part 112 The resonant frequency of the supported electromagnetic wave signal is shifted compared with the resonant frequency when the second radiating part 113 is symmetrical to the first radiating part 112 . Correspondingly, the Δf ₂ is used to describe the difference between the second radiation part 113 and the resonant frequency point f ₁ . When the second radiating part 113 is asymmetrical to the first radiating part 112, the resonant frequency point of the electromagnetic wave signal supported by the second radiating part 113 is f ₁ -Δf ₂ , which means that the second When the radiation part 113 is asymmetrical to the first radiation part 112, the resonant frequency point of the electromagnetic wave signal supported by the second radiation part 113 is higher than that of the second radiation part 113 and the first radiation part 112 The resonant frequency point of symmetry is shifted.

When the resonant frequency of the electromagnetic wave signal supported by the first radiating part 112 deviates from the resonant frequency of the electromagnetic wave signal supported by the second radiating part 113, the radiator 110 The isolation between transmitting and receiving electromagnetic wave signals in the second resonant mode and when the radiator 110 transmits and receives electromagnetic wave signals according to the second resonant mode becomes slightly worse. The first matching circuit M1 is electrically connected to the first radiating part 112, and the resonant frequency of the first radiating part 112 is adjusted to be equal to a preset frequency point _f1 ; the second matching circuit M2 is electrically connected to the second The radiation part 113 is used to adjust the resonant frequency point of the second radiation part 113 to be equal to the preset frequency point f ₁ , wherein the preset frequency point f ₁ is the second radiation part 113 and the first radiation part 113 part 112 is symmetrical with respect to the first feeding part 111, so that the radiator 110 transmits and receives electromagnetic wave signals according to the first resonant mode and the radiator 110 according to the second resonant mode. The isolation of electromagnetic wave signal is better.

Please refer to FIG. 5, FIG. 6, FIG. 7 and FIG. 8 together. FIG. 5 is a schematic diagram of the direction of the first current generated by the first resonance mode of the radiator in the antenna shown in FIG. 2 in the first half cycle; FIG. 6 is a schematic diagram of the waveform of the first current in FIG. 5; FIG. 7 is a schematic diagram of the direction of the first current generated by the radiator in the antenna shown in FIG. 2 in the second half cycle of the first resonance mode; FIG. 8 is A schematic diagram of the waveform of the first current in FIG. 7 . It should be noted that the first current in FIG. 5 and FIG. 7 is only a schematic diagram of the first current flow direction, that is, a simplified diagram of the first current flow direction, not a simulation diagram, which will be introduced later. Correspondingly, in FIG. 6 and FIG. 8 , the magnitude of the first current amplitude is only a schematic diagram of the first current amplitude, not an actual simulation diagram. In addition, it should be noted that the first current includes the flow direction of the first current, the magnitude of the first current, and the phase of the first current. In the schematic diagram of this embodiment, the flow direction of the first current, the magnitude of the first current The purpose of splitting with the phase of the first current is to intuitively and conveniently illustrate the flow direction of the first current, the amplitude of the first current, and the phase of the first current in the first half cycle and the second half cycle. The radiator 110 has a connection point CN0, and the second radiation portion 113 connects the first feeding portion 111 and the first radiation portion 112 to the connection point CN0. The first radiating part 112 has a first free end 1121, the second radiating part 113 has a second free end 1131, and the current generated by the first resonant mode is a periodically oscillating first current I ₁ , so The waveform of the first current is a half waveform, and the first current includes a first sub-current I ₁₁ and a second sub-current I ₁₂ , wherein, in the first half of a cycle, the current amplitude at the connection point CN0 The highest, the first sub-current _I11 flows from the connection point CN0 to the first free end 1121, and the second sub-current _I12 flows from the connection point CN0 to the second free end 1131; In the second half of the period, the phase of the first current is reversed by 180°. In other words, in the second half of a cycle, the current amplitude at the connection point CN0 is the highest; and the phase of the first current in the second half of a cycle is the same as the phase of the first current in the first half of a cycle Flip 180°. In this embodiment, the current amplitudes of the first free end 1121 and the second free end 1131 are zero. It should be noted that the current amplitude at the connection point CN0 is the difference between the current value at the connection point and the current amplitude at the first free end 1121 or the current amplitude at the second free end 1131 Therefore, in the second half of a cycle, the current amplitude at the connection point CN0 is still the highest, not the lowest. In the diagram of the second half cycle of a cycle, the waveform at the connection point CN0 is the lowest, which indicates that the phase of the first current in the second half cycle of a cycle is inverted from the phase of the first current in the first half cycle 180°. The first sub-current _I11 flows from the first free end 1121 to the connection point CN0, and the second sub-current _I12 flows from the second free end 1131 to the connection point CN0.

The connection point CN0 is a connection position of the first feeding part 111 , the first radiating part 112 and the second radiating part 113 . The ends where the first free end 1121 and the connection point CN0 are located are two ends of the first radiation portion 112 respectively. In this embodiment, the first free end 1121 is an end of the first radiation portion 112 away from the connection point CN0. Correspondingly, the ends where the second free end 1131 and the connection point CN0 are located are two ends of the second radiation portion 113 respectively. In this embodiment, the second free end 1131 is an end of the second radiation portion 113 away from the connection point CN0.

In this embodiment, the waveform of the first current is a half waveform, therefore, the waveform of the first sub-current is a quarter waveform, and the second sub-current is a quarter waveform, that is, the The first radiating part 112 supports a quarter-wavelength resonant mode, and the second radiating part 113 supports another quarter-wavelength mode.

Please refer to FIG. 9, FIG. 10, FIG. 11 and FIG. 12 together. FIG. 9 is a schematic diagram of the direction of the second current generated by the radiator in the antenna shown in FIG. 1 in the first half cycle of the second resonance mode; FIG. 10 is a schematic diagram of the waveform of the second current in FIG. 9; FIG. 11 is a schematic diagram of the direction of the second current generated by the radiator in the antenna shown in FIG. 1 in the second half cycle of the second resonance mode; FIG. 12 is The schematic diagram of the waveform of the second current in FIG. 11 . It should be noted that the second current in FIG. 9 and FIG. 11 is only a schematic diagram of the second current flow direction, that is, a simplified diagram of the second current flow direction, not a simulation diagram, which will be introduced later. Correspondingly, in FIG. 10 and FIG. 12 , the magnitude of the second current amplitude is only a schematic diagram of the second current amplitude, not an actual simulation diagram. In addition, it should be noted that the second current includes the flow direction of the second current and the magnitude of the second current. The purpose of splitting the flow direction of the second current and the magnitude of the second current in the schematic diagram of this embodiment is for intuitive It is convenient to indicate the flow direction of the second current and the magnitude of the second current in the first half cycle and the second half cycle. The radiator 110 has a connecting point CN0, the second radiating part 113 connects the first feeding part 111 and the first radiating part 112 at the connecting point CN0, and the first radiating part 112 has a second A free end 1121, the second radiating part 113 has a second free end 1131, the current generated by the second resonance mode is a periodically oscillating second current I ₂ , and the waveform of the second current I ₂ is Half waveform, in the first half cycle of a cycle, the current amplitude at the connection point CN0 is the highest, and the second current _I flows from the first free end 1121 to the second free end 1131; in a cycle In the second half cycle of , the phase of the second current is reversed by 180°. In other words, in the second half of a cycle, the current amplitude at the connection point CN0 is the highest; and the phase of the second current in the second half of a cycle is reversed compared to the phase of the second current in the first half of the cycle. 180°. The second current I ₂ flows from the second free end 1131 to the first free end 1121 . Please continue to refer to FIG. 1 and FIG. 2 , the first coupling stub 120 is located in a space surrounded by the first feeding part 111 and the first radiation part 112 .

The first coupling stub 120 provided by the embodiment of the present application is located in the space surrounded by the first power feeding part 111 and the first radiation part 112, and can make full use of the first power feeding part 111 and the first radiation part 112. The space between the radiation parts 112 makes the structure of the antenna 100 more compact, which is beneficial to the integrated and miniaturized design of the antenna 100 .

It can be understood that, in other implementation manners, the first coupling stub 120 may also be located outside the space formed by the first feeding part 111 and the first radiating part 112, for example, the first The coupling stub 120 is located on the side of the first radiating portion 112 away from the first feeding portion 111. In this case, the volume of the antenna 100 is relatively large, but as long as the first coupling stub 120 It only needs to be coupled with the first radiation part 112 .

Please refer to FIG. 1 , FIG. 2 and FIG. 13 together. FIG. 13 is a schematic diagram of an antenna provided in another embodiment of the present application. In this embodiment, the antenna 100 further includes a second coupling stub 130 . The second coupling stub 130 can be combined into the antenna 100 shown in any of the foregoing implementation manners. In the antenna 100 provided in this embodiment, the antenna 100 also includes a second coupling branch 130 combined into the antenna 100 shown in FIG. Definitions of Antenna 100 . The antenna 100 also includes a second coupling stub 130 . The second coupling stub 130 is coupled to the second radiation portion 113 , and the second coupling stub 130 is electrically connected to the ground 140 .

The second coupling branch 130 is coupled to the second radiation part 113, and the second coupling branch 130 is electrically connected to the ground electrode 140, so that the current generated by the radiator 110 according to the first resonance mode The waveform distortion is small, and the waveform distortion of the current generated by the radiator 110 according to the second resonant mode is small, so that the radiator 110 can improve the electromagnetic wave transmission and reception of the first frequency band according to the first resonant mode The degree of isolation between the signal and the radiation body 110 when transmitting and receiving electromagnetic wave signals in the second frequency band.

Specifically, the setting of the second coupling branch 130 can improve the waveform of the first current generated by the radiator 110 according to the first resonance mode, and improve the waveform of the first current generated by the radiator 110 according to the second resonance mode. The waveform of the second current, and then improve the time when the radiator 110 transmits and receives the electromagnetic wave signal of the first frequency band according to the first resonant mode and the time when the radiator 110 transmits and receives the electromagnetic wave signal of the second frequency band according to the second resonant mode isolation.

Please refer to Fig. 1, Fig. 2, Fig. 14 and Fig. 15 together. Fig. 14 is a structural schematic diagram of the first coupling stub in the antenna shown in Fig. 13; Fig. 15 is a second coupling stub in the antenna shown in Fig. 13 Schematic diagram of a coupled stub. The first coupling stub 120 includes a second feeding portion 121 and a first coupling portion 122 . The second feeding point P2 is located in the second feeding part 121 . The first coupling part 122 is electrically connected to the second feeding part 121 , and the first coupling part 122 is spaced from and coupled to the first radiation part 112 .

The second coupling stub 130 includes a second coupling portion 131 and a grounding portion 132 . The second coupling part 131 is spaced from and coupled to the second radiation part 113 , and the second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110 . The ground portion 132 is connected to the second coupling portion 131 , and the ground portion 132 is electrically connected to the ground 140 . Taking the central line L2 of the radiator 110 as an example for illustration, the second coupling part 131 and the first coupling part 122 are symmetrical with respect to the central line L2 of the radiator 110 . In one embodiment, the central line L2 of the radiator 110 coincides with the central line L1 of the first feeding part 111 in front; in other embodiments, the central line L2 of the radiator 110 coincides with the first The center lines L1 of the power feeders 111 do not overlap.

The second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110, which can further make the waveform distortion of the current generated by the radiator 110 according to the first resonant mode smaller, and can further The distortion of the waveform of the current generated by the radiator 110 according to the second resonant mode is small, so that the timing of the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode can be further improved. The isolation of electromagnetic wave signals of the second frequency band transmitted and received by the radiator 110 according to the second resonance mode.

In this embodiment, the connection point where the ground part 132 is connected to the second coupling part 131 is the first connection point CN1, and the connection point where the second power feeding part 121 is connected to the first coupling part 122 is The second connection point CN2, the first connection point CN1 and the second connection point CN2 are symmetrical about the radiator 110 .

In this embodiment, the first connection point CN1 and the second connection point CN2 are symmetrical about the radiator 110, which can further make the waveform distortion of the current generated by the radiator 110 according to the first resonance mode smaller, and The waveform distortion of the current generated by the radiator 110 according to the second resonant mode can be further reduced, so the time of the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode can be further improved. The degree of isolation from the electromagnetic wave signal of the second frequency band transmitted and received by the radiator 110 according to the second resonance mode.

In this embodiment, the first coupling part 122 extends along the first direction D1, the second power feeding part 121 extends along the second direction D2, and the second power feeding part 121 is connected to the first A midpoint of the coupling portion 122 . The second coupling portion 131 extends along the first direction D1, the ground portion 132 extends along the second direction D2, and the second coupling portion 131 is connected to a midpoint of the ground portion 132 . It should be noted that, in this embodiment, the extension direction of the first coupling part 122 is defined as pointing away from the first feeding part 111 from the end of the first coupling part 122 adjacent to the first feeding part 111 . section 111 orientation.

The second power feeding part 121 is connected to the midpoint of the first coupling part 122, so that the current corresponding to the second radio frequency signal transmitted to the first coupling part 122 via the second power feeding part 121 The distribution is relatively uniform, so that the current corresponding to the second radio frequency signal coupled to the radiator 110 by the first coupling part 122 is distributed relatively uniformly on the radiator 110, thereby improving the efficiency of the radiator 110 according to the The degree of isolation between the electromagnetic wave signal transmitted and received when the second radio frequency signal works in the second resonant mode, and the electromagnetic wave signal transmitted and received by the radiator 110 when the first radio frequency signal works in the first resonant mode.

Please refer to Figure 16, Figure 17 and Figure 18, Figure 16 is a schematic diagram of an antenna provided in another embodiment of the present application; Figure 17 is a schematic structural diagram of the first coupling branch in the antenna shown in Figure 16; Figure 18 is a diagram Schematic diagram of the second coupling stub in the antenna shown in 16. In this embodiment, the second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110 . The first coupling part 122 extends along the first direction D1, the second power feeding part 121 extends along the second direction D2, and the first coupling part 122 is connected to the second power feeding part 121 away from the one end of the second coupling branch 130; and the second coupling portion 131 extends along the first direction D1, the ground portion 132 extends along the second direction D2, and the ground portion 132 is connected to The second coupling portion 131 is away from the end of the first coupling branch 120 . It should be noted that, in this embodiment, the extension direction of the first coupling part 122 is defined as pointing away from the first feeding part 111 from the end of the first coupling part 122 adjacent to the first feeding part 111 . section 111 orientation.

The second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110, which can further make the waveform distortion of the current generated by the radiator 110 according to the first resonant mode smaller, and can further The distortion of the waveform of the current generated by the radiator 110 according to the second resonant mode is small, so that the timing of the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode can be further improved. The isolation of electromagnetic wave signals of the second frequency band transmitted and received by the radiator 110 according to the second resonance mode.

Please refer to Figure 19, Figure 20 and Figure 21 together, Figure 19 is a schematic diagram of an antenna provided in another embodiment of the present application; Figure 20 is a schematic structural diagram of the first coupling branch in the antenna shown in Figure 19; Figure 21 is a schematic diagram of the second coupling stub in the antenna shown in FIG. 19 . The second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110 . The first coupling part 122 extends along the first direction D1, the second power feeding part 121 extends along the second direction D2, and the first coupling part 122 is connected to all adjacent parts of the first power feeding part 111 one end of the second coupling branch 130; and the second coupling portion 131 extends along the first direction D1, the ground portion 132 extends along the second direction D2, and the ground portion 132 is connected to The second coupling portion 131 is adjacent to one end of the first coupling branch 120;

The second coupling part 131 and the first coupling part 122 are symmetrical about the radiator 110, which can further make the waveform distortion of the current generated by the radiator 110 according to the first resonant mode smaller, and can further The distortion of the waveform of the current generated by the radiator 110 according to the second resonant mode is small, so that the timing of the electromagnetic wave signal of the first frequency band transmitted and received by the radiator 110 according to the first resonant mode can be further improved. The isolation of electromagnetic wave signals of the second frequency band transmitted and received by the radiator 110 according to the second resonance mode.

Please refer to the antenna 100 provided in any of the foregoing implementation manners, the second coupling stub 130 is located in a space surrounded by the first feeding part 111 and the second radiating part 113 .

The second coupling branch 130 is located in the space surrounded by the first feeding part 111 and the second radiating part 113 , and can make full use of the first feeding part 111 and the second radiating part 113 The space between them makes the structure of the antenna 100 more compact, which is beneficial to the miniaturization and integration design of the antenna 100 .

It can be understood that, in other implementation manners, the second coupling stub 130 may also be located outside the space formed by the first feeding part 111 and the second radiating part 113, for example, the second coupling stub 130 is located on the side of the second radiating part 113 away from the first feeding part 111. In this case, the volume of the antenna 100 is relatively large, but as long as the second coupling stub 130 and the It only needs to be coupled with the second radiating part 113.

Please refer to FIG. 22 . FIG. 22 is a schematic diagram of an antenna provided in yet another embodiment of the present application. The antenna 100 provided in this embodiment also includes a splitter 150, and the antenna 100 also includes a splitter 150 that can be combined into the antenna 100 provided in any of the preceding embodiments. In the schematic diagram of this embodiment, the antenna The 100 further includes a splitter 150 combined with the antenna 100 provided in the previous implementation manner for illustration, and it should not be regarded as a limitation to the antenna 100 provided in the implementation manner of the present application. In this embodiment, the antenna 100 further includes a splitter 150 having an input end 151 , a first output end 152 and a second output end 153 . The input terminal 151 is used for receiving an original radio frequency signal, and the splitter 150 is used for splitting the original radio frequency signal into the first radio frequency signal and the second radio frequency signal. The first output terminal 152 is electrically connected to the first feeding point P1 for sending the first radio frequency signal to the first feeding point P1. The second output terminal 153 is electrically connected to the second feeding point P2 for outputting the second radio frequency signal to the second feeding point P2.

In this embodiment, the input terminal 151 is used to receive an original radio frequency signal, and the splitter 150 divides the original radio frequency signal into the first radio frequency signal and the second radio frequency signal. That is, in this embodiment, the splitter 150 is used to divide the original radio frequency signal with the preset power into the first radio frequency signal of the first sub-power and the second radio frequency signal of the second sub-power, wherein, The first sub-power plus the second sub-power is equal to the preset power. The first sub-power and the second sub-power may or may not be equal. In an embodiment, the first sub-power is equal to the second sub-power and is equal to half of the preset power. The antenna 100 includes a splitter 150, so the original radio frequency signal can come from one radio frequency chip. The splitter 150 divides the original signal into the first radio frequency signal and the second radio frequency signal, so that the consistency of the first radio frequency signal and the second radio frequency signal is better, and further makes The frequency band in which the radiator 110 transmits and receives electromagnetic wave signals according to the first radio frequency signal is relatively consistent with the frequency band in which the radiator 110 transmits and receives electromagnetic wave signals according to the second radio frequency signal. In addition, compared to using two antennas 100 to realize the transmission and reception of two electromagnetic wave signals in the same frequency band, one antenna 100 provided by the embodiment of the present application can use one radiator 110 to realize the transmission and reception of two electromagnetic wave signals in the same frequency band. The antenna 100 of the present application has a small volume. In this implementation manner, the original radio frequency signal is generated by a feed S.

Please refer to FIG. 23 and FIG. 24 , FIG. 23 is a schematic diagram of an antenna provided by another embodiment of the present application; FIG. 24 is a schematic diagram of an antenna provided by another embodiment of the present application. The antenna 100 provided in Fig. 23, Fig. 24 and related embodiments thereof is basically the same as the antenna 100 provided in Fig. 22 and related embodiments thereof, except that, in the embodiments of Fig. 23 and Fig. 24, the antenna 100 also includes a phase shifter 160 . That is, in this embodiment, the antenna 100 further includes a splitter 150 and a phase shifter 160 . Please refer to FIG. 23 , the phase shifter 160 is electrically connected between the first output terminal 152 and the first feeding point P1, and is used for phase shifting the first radio frequency signal, and phase shifting The subsequent first radio frequency signal is output to the first feeding point P1.

Please refer to FIG. 24 , the phase shifter 160 is electrically connected between the second output terminal 153 and the second feeding point P2, and is used for phase shifting the second radio frequency signal, and phase shifting The subsequent second radio frequency signal is output to the second feeding point P2.

Wherein, the phase shifter 160 may be realized by using a lumped device or a distributed circuit. The antenna 100 provided in this embodiment includes a phase shifter 160, which can make the phases of the first radio frequency signal loaded on the first feeding point P1 and the second radio frequency signal loaded on the second feeding point P2 different. Therefore, the phase Compared with the antenna 100 not provided with the phase shifter 160, the radiation pattern of the antenna 100 provided in this embodiment is different from that of the antenna 100 not provided with the phase shifter 160, which can further improve the use of the antenna 100 for communication. communication effect.

If the antenna 100 does not include the phase shifter 160, when the electronic device 1 (such as a mobile phone) including the antenna 100 communicates with other devices (such as a Bluetooth headset or a mobile phone, etc.), if the antenna 100 The direction diagram of 100 faces the first position (for example, the right side), and the other device is located at the second position (for example, the left side) of the electronic device 1, then, the distance between the electronic device 1 and the other device The communication effect is not good, for example, the communication distance is relatively short, for example, the communication distance between the electronic device 1 and the other device is the first distance. The antenna 100 provided in the embodiment of the present application includes the phase shifter 160, then, part of the directional diagram in the directional diagram of the antenna 100 faces the first orientation, and the other devices are located in the electronic device 1 In the first orientation, when the electronic device 1 including the antenna 100 communicates with the other device, the communication distance between the electronic device 1 and the other device is a second distance, and the second distance is greater than The first distance, that is, the communication effect of the antenna 100 including the phase shifter 160 is better. For example, the first distance may be but not limited to 50m, and the second distance may be but not limited to 100m.

In addition, compared to using two antennas 100 to realize the transmission and reception of two electromagnetic wave signals in the same frequency band, and compared to using two antennas 100 to realize different radiation patterns, the antenna 100 provided by the embodiment of the present application uses one The radiator 110 can realize the transmission and reception of two electromagnetic wave signals of the same frequency band, and the phase shifter 160 in this application can make the electromagnetic wave signals transmitted and received by one antenna 100 have different patterns. Therefore, the antenna 100 of the present application has a compact structure and a small volume.

In this embodiment, the phase shifter 160 in the antenna 100 changes the phases of the first radio frequency signal loaded on the first feeding point P1 and the phase of the second radio frequency signal loaded on the second feeding point P2 as follows: Fixed value, that is, the phase difference between the first radio frequency signal loaded on the first feed point P1 and the second radio frequency signal loaded on the second feed point P2 is constant, therefore, the antenna can be The orientation pattern in 100 is fixed.

Please refer to FIG. 25 and FIG. 26. FIG. 25 is a schematic diagram of an antenna provided in another embodiment of the present application; FIG. 26 is a schematic diagram of an antenna provided in another embodiment of the present application. The antenna 100 provided in this embodiment is basically the same as the antenna 100 provided in FIG. 23 and FIG. 24 , except that, in this embodiment, the antenna 100 further includes a control chip 170 . The control chip 170 is used for generating control signals, and the control chip 170 is electrically connected to the phase shifter 160 . Please refer to FIG. 25, the phase shifter 160 is electrically connected between the first output terminal 152 and the first feeding point P1, and the control signal is used to control the phase-shifted first radio frequency signal and the The phase difference between the second radio frequency signals.

Please refer to FIG. 26, the phase shifter 160 is electrically connected between the second output terminal 153 and the second feeding point P2, and the control signal is used to control the first radio frequency signal and the second radio frequency signal after phase shifting. The phase difference between the two RF signals.

The control signal may control the phase difference between the first radio frequency signal after phase shifting and the second radio frequency signal, or control the phase difference between the first radio frequency signal and the second radio frequency signal after phase shifting, that is, The control signal can make the phase difference between the first radio frequency signal loaded on the first feed point P1 and the second radio frequency signal loaded on the second feed point P2 adjustable, thereby making the direction of the antenna 100 The map can be adjusted, so that the communication quality of the antenna 100 can be further improved. For example, the control signal adjusts the phase shifter 160, so that the phase difference between the first radio frequency signal loaded on the first feeding point P1 and the second radio frequency signal loaded on the second feeding point P2 is Adjustable, therefore, the pattern of the antenna 100 is adjustable. When the electronic device 1 with the antenna 100 communicates with other devices, the control chip 170 records the phase difference between the first radio frequency signal and the second radio frequency signal. The communication quality of the device (for example, signal strength, maximum communication distance, etc.), and then select an optimal phase difference, wherein, under the optimal phase difference, the pattern of the antenna 100 faces the other device, and the The communication quality between the electronic device 1 and the other devices is the best.

In this embodiment, the switching of the pattern can be realized on the radiator 110 of one antenna 100. Compared with the switching of the pattern using two or more antennas, the structure of the antenna 100 of the present application is simple and compact, and has the advantages of Smaller volume.

In this embodiment, the antenna 100 further includes a control chip 170, and the control chip 170 controls the phase shifter 160, thereby controlling the phase difference between the first radio frequency signal after the phase shift and the second radio frequency signal, The pattern of the antenna 100 is changed, so that the pattern of the antenna 100 can be adjusted according to the orientation of other devices, and the communication quality between the electronic device 1 including the antenna 100 and other devices can be improved.

In this embodiment, when the first frequency band is the same as the second frequency band, the center frequency of the first frequency band may be, but not limited to, 4.3GHz, 2.4GHZ, etc. The frequency bands supported by the antenna 100 can be designed according to actual needs.

Next, the antenna 100 provided by the present application will be described with reference to a schematic simulation diagram. Please refer to FIG. 27 . FIG. 27 is a schematic simulation diagram of the antenna shown in FIG. 1 . This schematic diagram is a schematic diagram of S-Parameters of the antenna 100 . The abscissa is frequency, the unit is GHz, and the total coordinate is S parameter, the unit is dB. In this embodiment, curve ① is a schematic diagram of the S-parameter curve of the first resonance mode corresponding to the first frequency band; curve ② is a schematic diagram of the S-parameter curve of the second frequency band corresponding to the second resonance mode. Curve ③ is a schematic diagram of the isolation curve between the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band. It can be seen from the simulation schematic diagram that the first frequency band is the same as the second frequency band (in this embodiment, the center frequency is 4.3 GHz), and the isolation between the first frequency band and the second frequency band is relatively good, about -10dB.

Please refer to FIG. 28 , which is a schematic simulation diagram of the antenna shown in FIG. 13 . This schematic diagram is a schematic diagram of S-Parameters of the antenna 100 . The abscissa is frequency, the unit is GHz, and the total coordinate is S parameter, the unit is dB. In this embodiment, curve ① is a schematic diagram of the S-parameter curve of the first resonance mode corresponding to the first frequency band; curve ② is a schematic diagram of the S-parameter curve of the second frequency band corresponding to the second resonance mode. Curve ③ is a schematic diagram of the isolation curve between the electromagnetic wave signal in the first frequency band and the electromagnetic wave signal in the second frequency band. It can be seen from the simulation schematic diagram that the first frequency band is the same as the second frequency band (4.3 GHz in this embodiment), and the electromagnetic wave signal of the first frequency band is isolated from the electromagnetic wave signal of the second frequency band. Well, about -15dB. It can be seen from Fig. 27 and Fig. 28 that the isolation degree between the electromagnetic wave signal of the first frequency band and the electromagnetic wave signal of the second frequency band in the antenna 100 provided in Fig. 13 and its related embodiments is about -15dB, while in Fig. 1 and its related embodiments The isolation degree between the electromagnetic wave signal of the first frequency band and the electromagnetic wave signal of the second frequency band in the provided antenna 100 is about -10dB, and -15dB<-10dB, for the isolation degree, the smaller the value, the higher the isolation degree Well, therefore, the isolation between the electromagnetic wave signal of the first frequency band and the electromagnetic wave signal of the second frequency band in the antenna 100 provided in FIG. 13 and its related embodiments is better than that of the first frequency band in the antenna 100 provided in FIG. 1 and its related embodiments The degree of isolation between the electromagnetic wave signal and the electromagnetic wave signal in the second frequency band. That is, the isolation degree of the electromagnetic wave signal of the first frequency band and the electromagnetic wave signal of the second frequency band in the antenna 100 including the second coupling stub 130 is higher than that of the electromagnetic wave signal of the first frequency band in the antenna 100 not including the second coupling stub 130 And the isolation of the electromagnetic wave signal of the second frequency band is better.

Please refer to Figure 29 and Figure 30 together, Figure 29 is a schematic diagram of current simulation when the antenna shown in Figure 13 is in the first resonance mode; Figure 30 is a current simulation diagram when the antenna shown in Figure 13 is in the second resonance mode schematic diagram. It can be seen from the current simulation schematic diagrams shown in FIG. 29 and FIG. 30 that the first resonance mode and the second resonance mode are different. The first resonance mode and the second resonance mode are different, so that the electromagnetic wave signal transmitted and received by the radiator 110 according to the first resonance mode and the electromagnetic wave signal transmitted and received by the radiator 110 according to the second resonance mode better isolation. Therefore, the communication performance of the antenna 100 is better.

Please refer to Figure 31 and Figure 32 together, Figure 31 is the direction diagram when the antenna shown in Figure 13 is loaded with the first radio frequency signal alone; Figure 32 is the direction when the antenna shown in Figure 13 is loaded with the second radio frequency signal alone picture. In FIG. 31 , the antenna 100 loads the first radio frequency signal and does not load the second radio frequency signal; in FIG. 32 , the antenna 100 does not load the first radio frequency signal but loads the second radio frequency signal. It can be seen from FIG. 31 and FIG. 32 that the radiation pattern when the antenna 100 alone loads the first radio frequency signal is different from the radiation pattern when the antenna 100 alone loads the second radio frequency signal.

Please refer to FIG. 33 and FIG. 34 . FIG. 33 is a directional diagram of the antenna shown in FIG. 13 when the antenna shown in FIG. 13 is loaded with the first radio frequency signal and the second radio frequency signal of the same phase. Fig. 34 is a directional diagram of the antenna when the phase of the first radio frequency signal loaded on the antenna shown in Fig. 13 is greater than the phase of the second radio frequency signal by 90°. It can be seen from FIG. 31 , FIG. 32 and FIG. 33 that the radiation pattern of the antenna 100 in FIG. 33 is different from that in FIGS. 31 and 32 . It can be seen from FIG. 31 , FIG. 32 and FIG. 34 that the radiation pattern of the antenna 100 in FIG. 34 is different from the radiation pattern of the antenna 100 in FIGS. 31 and 32 . In addition, it can be seen from FIG. 33 and FIG. 34 that the radiation pattern of the antenna 100 in FIG. 34 is different from the radiation pattern of the antenna 100 in FIG. 33 .

Please refer to FIG. 35 , which is a schematic diagram of an antenna array provided in an embodiment of the present application. The antenna array 10 includes a plurality of antennas 100 described in any one of the foregoing implementation manners, and the plurality of antennas 100 are arranged according to a preset rule.

The plurality of antennas 100 are arranged according to a preset rule to form the antenna array 10, which can make the antenna array 10 have better communication performance. For example, the antenna array 10 may constitute an N*N Multiple-Input Multiple-Output (MIMO) antenna array 10 , where N is a positive integer. For example, the antenna array 10 may constitute a 4*4 MIMO antenna array.

In one embodiment, the directions of the radiation patterns of each antenna 100 are different. The directions of the directional patterns of each antenna 100 are different, so that the directional patterns of the antenna array 10 can cover a wider range, and thus the communication effect of the antenna array 10 is better.

In addition, different antennas 100 can be laid out according to different application scenarios to form an antenna array 10 suitable for the application scenario, so that the radiation pattern of the antenna array 10 can cover a wider range, so that the antenna array 10 can be applied to in the application scenario.

The present application also provides an electronic device 1, which includes but is not limited to a mobile phone, an Internet device (mobile internet device, MID), an electronic book, a portable playback station (Play Station Portable, PSP) or a personal digital assistant (Personal Digital Assistant, PDA) and other devices with communication functions. Please refer to FIG. 36 and FIG. 37 together. FIG. 36 is a schematic three-dimensional structure diagram of an electronic device provided by an embodiment of the present application; FIG. 37 is a cross-sectional view of the electronic device provided in FIG. 36 along line I-I. The electronic device 1 includes the antenna 100 described in any of the foregoing embodiments; or, the electronic device 1 includes the antenna array 10 described in any of the foregoing embodiments.

The electronic device 1 further includes a middle frame 30 , a screen 40 , a circuit board 50 and a battery cover 60 . Next, the middle frame 30 , the screen 40 , the circuit board 50 and the battery cover 60 will be described in detail as follows.

The material of the middle frame 30 is metal, such as aluminum-magnesium alloy. The middle frame 30 generally constitutes the ground of the electronic device 1 , and when the electronic devices in the electronic device 1 need to be grounded, the middle frame 30 can be connected to the ground. In addition, the ground system in the electronic device 1 includes the ground in the circuit board 50 and the ground in the screen 40 in addition to the middle frame 30 . When the aforementioned second coupling stub 130 in the antenna 100 is grounded, the second coupling stub 130 can be electrically connected to any of the middle frame 30 , the ground in the circuit board 50 and the ground in the screen 40 one or more. In other words, the aforementioned ground 140 in the antenna 10 includes any one or more of the middle frame 20 , the ground in the circuit board 50 and the ground in the screen 40 .

The screen 40 may be a display screen with display functions, or a screen integrated with display and touch functions. The screen 40 is used to display text, images, videos and other information. The screen 40 is carried on the middle frame 30 and is located at one side of the middle frame 30 .

The circuit board 50 is usually carried on the middle frame 30 , and the circuit board 50 and the screen 40 are carried on opposite sides of the middle frame 30 . At least one or more of the first matching circuit M1, the second matching circuit M2, the splitter 150, the radio frequency chip generating the original radio frequency signal, the phase shifter 160, and the control chip 170 of the antenna 100 described above can be arranged in the on the circuit board 50.

The battery cover 60 is arranged on the side of the circuit board 50 away from the middle frame 30, and the battery cover 60, the middle frame 30, the circuit board 50, and the screen 40 cooperate with each other to form a complete assembly. electronic equipment 1. It can be understood that the description of the structure of the electronic device 1 is only a description of the structure of the electronic device 1, and should not be interpreted as a limitation on the electronic device 1, nor should it be understood as a description of the antenna 100 and the antenna array 10 limit.

When the second coupling branch 130 is electrically connected to the ground of the middle frame 30, the second coupling branch 130 can also be connected to the ground of the middle frame 30 through a connecting rib, or the second coupling branch 130 can also be connected to the ground of the middle frame 30 through a conductive spring It is electrically connected to the ground of the middle frame 30 .

The electronic device 1 includes a plurality of sides 11a connected end to end. In this embodiment, the electronic device 1 includes four sides 11a connected end to end as an example. Understandably, it should not be understood It is a limitation of the electronic device 1 provided in the embodiment of the present application. One or more of the radiator 110, the first coupling stub 120 and the second coupling stub 130 in the antenna 100 may be directly disposed on the side 11a, or formed on the side 11a, or It is disposed inside the electronic device 1 and adjacent to the side 11a. When one or more of the radiator 110, the first coupling branch 120 and the second coupling branch 130 in the antenna 100 are directly arranged on the side 11a, or formed on the side 11a, or When it is arranged inside the electronic device 1 and adjacent to the side 11a, it can reduce or even avoid the influence of other components in the electronic device 1 on the transmitting and receiving performance of the antenna 100 when transmitting and receiving electromagnetic wave signals.

The radiator 110 can be, but not limited to, an FPC antenna radiator, an LDS antenna radiator, a PDS antenna radiator, or a metal branch. Therefore, the radiator 110 can pass through an FPC, or an LDS, or Processes such as PDS or metal patches are implemented on the side 11 a of the electronic device 1 .

Correspondingly, the first coupling stub 120 can be realized on the side of the electronic device 1 through FPC, or LDS, or PDS, or metal patch processing.

Correspondingly, the second coupling stub 130 can be realized on the side 11 a of the electronic device 1 through FPC, or LDS, or PDS, or metal patch processing.

In addition, the middle frame 30 includes a frame body 310 and a frame 320 . The frame 320 is bent and connected to the periphery of the frame body 310 , and any one of the radiator 110 , the first coupling branch 120 and the second coupling branch 130 in the foregoing embodiments can be formed on the frame body 310 . on the frame 320, thereby making the structure of the electronic device 1 more compact.

In this embodiment, the frame body 310 is partially exposed to form the side 11 a of the electronic device 1 . Understandably, in other embodiments, the side 11 a of the electronic device 1 may be formed by a part of the battery cover 60 .

Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations on the present application, and those skilled in the art can make the above-mentioned Changes, modifications, substitutions and modifications are made to the embodiments, and these improvements and modifications are also regarded as the protection scope of the present application.

Claims (21)

1. An antenna, characterized in that the antenna comprises: a radiator, the radiator has a first feed point for receiving a first radio frequency signal, and the radiator works in a first resonance mode according to the first radio frequency signal; and A first coupling branch, the first coupling branch has a second feeding point, the second feeding point is used to receive a second radio frequency signal, the first coupling branch is coupled with the radiator, and the first coupling branch is coupled to the radiator. Two radio frequency signals are coupled to the radiator, and the radiator works in a second resonance mode according to the second radio frequency signal, wherein the second resonance mode is different from the first resonance mode. 2. The antenna according to claim 1, wherein the radiator comprises: a first power feeding part, the first feeding point is located in the first power feeding part; a first radiation part, connected to the first feeding part, and coupled with the first coupling stub; and The second radiating part is connected to the first feeding part and the first radiating part. 3. The antenna according to claim 2, wherein the frequency bands of the electromagnetic wave signals supported by the first resonant mode and the second resonant mode are the same, and the first resonant mode includes two quarters A wavelength resonance mode, the second resonance mode is a half-wavelength resonance mode. 4. The antenna according to claim 3, wherein the first radiating portion is used to support one of the quarter-wavelength resonance modes, and the second radiating portion is used to support the other quarter-wavelength resonance mode. A wavelength resonant mode, the first radiating part and the second radiating part are jointly used to support the second resonant mode. 5. The antenna according to claim 2, wherein the second radiating part and the first radiating part are symmetrical with respect to the first feeding part. 6. The antenna according to claim 2, wherein the second radiating part and the first radiating part are asymmetrical with respect to the first feeding part; The antenna also includes at least one of a first matching circuit and a second matching circuit: When the antenna further includes a first matching circuit, the first matching circuit is electrically connected to the first radiating part, and is used to adjust the resonant frequency of the first radiating part to be equal to a preset frequency; When the antenna further includes a second matching circuit, the second matching circuit is electrically connected to the second radiating part, and is used to adjust the resonant frequency of the second radiating part to be equal to a preset frequency, wherein the The preset frequency point is a resonant frequency point when the second radiating part and the first radiating part are symmetrical with respect to the first feeding part. 7. The antenna according to claim 2, wherein the radiator has a connection point, and the second radiation part connects the first feeding part and the first radiation part at the connection point, The first radiating part has a first free end, the second radiating part has a second free end, the current generated by the first resonant mode is a periodically oscillating first current, and the first current includes a first A sub-current and a second sub-current, wherein, in the first half of a cycle, the current amplitude at the connection point is the highest, and the first sub-current flows from the connection point to the first free end, so The second sub-current flows from the connection point to the second free end; in the second half of a cycle, the phase of the first current is deflected by 180°, and the first sub-current flows from the first free end end flows to the connection point, and the second sub-current flows from the second free end to the connection point. 8. The antenna according to claim 2, wherein the radiator has a connecting point, and the second radiating part connects the first feeding part and the first radiating part at the connecting point, The first radiating part has a first free end, the second radiating part has a second free end, and the current generated by the second resonant mode is a periodically oscillating second current, in the first half of a cycle , the current amplitude at the connection point is the highest, and the second current flows from the first free end to the second free end; in the second half of a cycle, the phase of the second current is deflected by 180 °, the second current flows from the second free end to the first free end. 9. The antenna according to claim 2, wherein the first coupling stub is located in a space surrounded by the first feeding part and the first radiating part. 10. The antenna according to claim 2, wherein the antenna further comprises: A second coupling stub, the second coupling stub is coupled to the second radiation portion, and the second coupling stub is electrically connected to the ground. 11. The antenna of claim 10, wherein The first coupling stub includes: a second feeder, the second feeder point is located at the second feeder; and a first coupling part, the first coupling part is electrically connected to the second power feeding part, and the first coupling part is spaced from and coupled to the first radiation part; The second coupling branch includes: a second coupling part, the second coupling part is spaced from and coupled to the second radiation part, and the second coupling part and the first coupling part are symmetrical with respect to the radiator; and a ground part, the ground part is connected to the second coupling part, and the ground part is electrically connected to the ground electrode. 12. The antenna according to claim 11, wherein the connection point where the ground portion is connected to the second coupling portion is a first connection point, and the second feeding portion is connected to the first coupling portion The connection point of is the second connection point, and the first connection point and the second connection point are symmetrical about the radiator. 13. The antenna according to claim 11, wherein the first coupling portion extends along a first direction, the second feeding portion extends along a second direction, and the second feeding portion is connected to the midpoint of the first coupling portion; The second coupling portion extends along the first direction, the ground portion extends along the second direction, and the second coupling portion is connected to a midpoint of the ground portion. 14. The antenna according to claim 11, wherein the first coupling portion extends along a first direction, the second feeding portion extends along a second direction, and the first coupling portion is connected to the The second feeding portion is away from one end of the second coupling stub; and the second coupling portion extends along the first direction, the grounding portion extends along the second direction, and the grounding portion connected to an end of the second coupling part away from the first coupling stub; or, The first coupling part extends along the first direction, the second feeding part extends along the second direction, and the first coupling part is connected to the first feeding part adjacent to the second coupling stub and the second coupling portion extends along the first direction, the ground portion extends along the second direction, and the ground portion is connected to the second coupling portion adjacent to the first coupling one end of the branch. 15. The antenna according to claim 10, wherein the second coupling stub is located in a space surrounded by the first feeding part and the second radiating part. 16. The antenna according to claim 1, wherein the antenna further comprises a splitter, the splitter has: an input terminal, the input terminal is used to receive an original radio frequency signal, and the splitter is used to divide the original radio frequency signal into the first radio frequency signal and the second radio frequency signal; a first output terminal, the first output terminal is electrically connected to the first feed point, and is used to transmit the first radio frequency signal to the first feed point; and A second output terminal, the second output terminal is electrically connected to the second feeding point, and is used for outputting the second radio frequency signal to the second feeding point. 17. The antenna according to claim 16, further comprising a phase shifter; The phase shifter is electrically connected between the first output terminal and the first feeding point, and is used for phase shifting the first radio frequency signal, and outputting the phase shifted first radio frequency signal to said first feed point; Alternatively, the phase shifter is electrically connected between the second output terminal and the second feeding point, and is used for phase shifting the second radio frequency signal, and shifting the phase shifted second radio frequency signal output to the second feed point. 18. The antenna according to claim 17, further comprising: a control chip, the control chip is used to generate a control signal, and the control chip is electrically connected to the phase shifter; If the phase shifter is electrically connected between the first output terminal and the first feeding point, the control signal is used to control the phase shift between the first radio frequency signal and the second radio frequency signal phase difference; If the phase shifter is electrically connected between the second output terminal and the second feeding point, the control signal is used to control the phase between the first radio frequency signal and the phase-shifted second radio frequency signal Difference. 19. An antenna array, characterized in that the antenna array comprises multiple antennas according to any one of claims 1-18, and the multiple antennas are arranged according to a preset rule. 20. An antenna array as claimed in claim 19, wherein the direction of the pattern of each antenna is different. 21. An electronic device, characterized in that the electronic device comprises the antenna according to any one of claims 1-18; or, the electronic device comprises the antenna according to any one of claims 19-20 array.

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