TWM493773U - Three feed point five band antenna of smart phone - Google Patents

Description

Smart phone three feed point five-band antenna 【0001】

This case is about an antenna of a smart phone, especially a three-band antenna of a smart phone.

【0002】

With the rapid development of wireless communication technology, smart mobile phone devices are widely used by the public, but the development of wireless communication technology has evolved from the original 2G to 3G, and each country has different frequency bands as the law. Area use. Because the function of the smart phone device is increased and it is necessary to carry it conveniently, there is a requirement to reduce the volume and compaction. In addition, the antenna in the smart phone is used to transmit and receive wireless signals to achieve the function of calling and transmitting data on the smart phone. Since it is necessary to meet the difference of multiple frequency bands all over the world, how to compress the size of the antenna And the function of multi-band radiation is an issue that is deeply discussed in the industry.

[0003]

In the prior art, a Planar Inverted-F Antenna with two feed points is widely used in mobile communication products to be used as an antenna device for transmitting and receiving wireless signals. However, the planar inverted-F antenna can be applied to multi-band antenna design, and the planar inverted-F antenna designed in the same volume has better performance than the monopole antenna, but its broadband Benefits and high gain are still limited. Generally, the planar inverted-F antenna is designed to resonate in two-band or reference-band resonance operation. There are still many multi-band resonance designs on the same antenna for four or more frequencies. Limitation, so if you want to achieve a four-frequency or five-frequency resonance design in the conventional technology, usually four feed-in points of two planar inverted-F antennas are used as the main design, but this method will greatly increase the area of the antenna. Not conducive to miniaturization.

[0004]

The purpose of this case is to provide a five-band antenna for the three-input point of the smart phone, which can reduce the physical size, can operate in the five-band simultaneously or in a specific frequency range required, and can improve the performance.

[0005]

In order to achieve the above purpose, the present invention provides a five-band antenna of a three-input point of a smart phone, comprising a first metal component and a second metal component. The first metal component includes a first extension and a first radiation. The first extending portion has a first feeding end and a first connecting portion, and the first feeding end is configured to feed the signal. The first radiating portion is connected to the first connecting portion, and is configured to generate and receive wireless signals in the first frequency band, wherein the first radiating portion includes a first segment, a second segment, and a third segment, and the first segment The second section and the third section are connected in sequence. The second metal component is spaced apart from the first metal component and includes a second extension, a second radiation, a third extension, and a third radiation. The second extending portion has a second feeding end and a second connecting portion, and the second feeding end is configured to feed the signal. The second radiating portion is connected to the second connecting portion, and includes a first branch portion and a second branch portion, wherein the first branch portion and the second branch portion respectively have a strip structure, and the first branch portion and the second branch portion are respectively The system is configured to generate and receive wireless signals in the second frequency band and the third frequency band. The third extending portion has a third feeding end and a third connecting portion, the third feeding end is configured to feed the signal, and the third connecting portion is connected to the second connecting portion. One end of the third radiating portion is connected to the second connecting portion and the third connecting portion, and the other end of the third radiating portion has a third branch portion and a fourth branch portion, and the third branch portion and the fourth branch portion are respectively a rectangle a structure, and the third branch portion extends from a direction away from the second radiating portion, and the fourth branch portion extends from a direction toward the second radiating portion, wherein the third branch portion and the fourth branch portion are respectively configured Generating and receiving wireless signals in the fourth frequency band and the fifth frequency band.

[0019]

1‧‧‧3 feed point five-band antenna
11‧‧‧First metal component
111‧‧‧First Extension
111a‧‧‧first feed end
111b‧‧‧First connection segment
112‧‧‧First Radiation Department
112a‧‧‧The first paragraph
112b‧‧‧The second paragraph
112c‧‧‧The third paragraph
12‧‧‧Second metal components
121‧‧‧Second extension
121a‧‧‧second feed end
121b‧‧‧second connection
122‧‧‧Second Radiation Department
123‧‧‧First Branch
124‧‧‧Second branch
125‧‧‧ Third Extension
125a‧‧‧ third feed end
125b‧‧‧ third connection
126‧‧ Third Radiation Department
126a‧‧‧Connected section
127‧‧ Third Branch
128‧‧‧ Fourth Branch
21‧‧‧First leading end
22‧‧‧Second guiding end
23‧‧‧ Third Guide
3‧‧‧ Carrier
31‧‧‧First via
32‧‧‧Second via
33‧‧‧3rd via
Bands A to E ‧ ‧ first to fifth bands

[0006]

FIG. 1 is a schematic structural view of a five-band antenna of a three-input point of a smart phone according to a preferred embodiment of the present invention.
Figure 2 is a partial enlarged view of the five-band antenna of the three feed points of the smart phone shown in Figure 1.
Figure 3 is a schematic diagram showing the reverse structure of the five-band antenna of the three-input point of the smart phone shown in Figure 1.
Figure 4 is a comparison of standing wave ratio versus frequency variation of the first frequency band generated by the three-band antenna of the three feed point of the preferred embodiment of the present invention.
FIG. 5 is a comparison diagram of standing wave ratio versus frequency variation of the second frequency band and the third frequency band generated by the five-band antenna of the three feed point of the preferred embodiment of the present invention.
Figure 6 is a comparison of the standing wave ratio versus the frequency variation of the fourth frequency band and the fifth frequency band generated by the five-band antenna of the three feed points of the preferred embodiment of the present invention.

【0007】

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and is not intended to

[0008]

FIG. 1 is a schematic structural view of a five-band antenna of a three-input point of a smart phone according to a preferred embodiment of the present invention. As shown in FIG. 1, the three-input five-band antenna 1 of the smart phone of the present invention includes a first metal component 11 and a second metal component 12. The first metal component 11 includes a first extending portion 111 and a first radiating portion 112. The first extending portion 111 has a first feeding end 111a and a first connecting portion 111b. The first feeding end 111a is configured to feed the signal. . One end of the first radiating portion 112 is connected to the first connecting portion 111b of the first extending portion 111, and is composed of a first segment portion 112a, a second segment portion 112b, and a third segment portion 112c, and the first radiating portion 112 is The structure is resonant to generate the wireless signal transmission and reception in the first frequency band.

【0009】

The second metal component 12 is spaced apart from the first metal component 11 and includes a second extension portion 121, a second radiation portion 122, a third extension portion 125, and a third radiation portion 126. The second extending portion 121 has a second feeding end 121a and a second connecting portion 121b, wherein the second feeding end 121a is framed by the feeding signal. The second radiating portion 122 is connected to the second connecting portion 121b of the second extending portion 121. The second radiating portion 122 includes a first branch portion 123 and a second branch portion 124. The first branch portion 123 and the second branch portion 124 are both The structure is a strip-like structure, and the length of the second branch portion 124 is relatively longer than the length of the first branch portion 123. The second connecting portion 121b is connected to one of the long sides of the first branch portion 123, and one of the long sides of the second branch portion 124 is connected to the other long side of the first branch portion 123, and the first branch portion 123 is The second branching unit 124 is respectively configured to resonate to generate wireless signals for transmission and reception in the second frequency band and the third frequency band. The third extending portion 125 has a third feeding end 125a and a third connecting portion 125b. The third feeding end 125a is configured to feed the signal, and the third connecting portion 125b is connected to the second connecting portion 121b. One end of the third radiating portion 126 is connected to the third connecting portion 121b and the third connecting portion 125b of the third extending portion 125, and the other end of the third radiating portion 126 has a third branch portion 127 and a fourth branch portion 128, The three branch portions 127 and the fourth branch portion 128 are respectively a rectangular structure, and the third branch portion 127 extends outward in a direction away from the second radiating portion 122, and the fourth branch portion 128 is oriented toward the first The direction of the second radiating portion 122 extends, the area of the third branch portion 127 is relatively smaller than the area of the fourth branch portion 128, and the third branch portion 127 and the fourth branch portion 128 are respectively configured to resonate to generate the fourth frequency band and the fifth portion. Wireless signal transmission and reception in the frequency band.

[0010]

Referring to FIG. 1 again, the first extension portion 111 and the second extension portion 121 of the five-band antenna 1 of the smart phone three-point feeding point are arranged parallel to each other and spaced apart from each other, and the third extension portion 125 is configured by The second extending portion 121 is extended in a U-shaped structure, and the first extending portion 111 and the second extending portion 121 are respectively strip-shaped structures, wherein the third extending portion 125 is a coupling element, such as an inductive element, by coupling The characteristics of the components achieve impedance matching, which in turn improves overall performance and overall gain. In some embodiments, the first feed end 111a and the third feed end 125a are configured to feed the ground signal, and the second feed end 121a is configured to feed the high frequency signal.

[0011]

In some embodiments, the first radiating portion 112 is substantially a groove-like structure composed of the first segment portion 112a, the second segment portion 112b, and the third segment portion 112c, and the first segment portion 112a and the second segment portion 112b and the third segment 112c are sequentially connected. The first side of the first segment 112a is connected to the first connecting segment 111b, the second side of the first segment 112a is connected to the first side of the second segment 112b, and the second edge of the second segment 112b is It is connected to the first side of the third segment portion 112c, and the opening of the groove-like structure formed by the first segment portion 112a, the second segment portion 112b, and the third segment portion 112c faces the second radiating portion 122. In this embodiment, the first radiating portion 112 is configured to generate and transmit wireless signals in the first frequency band by resonance, wherein the frequency of the first frequency band is between 1920 MHz and 2170 MHz.

[0012]

In the embodiment, the second radiating portion 122 is interposed between the first radiating portion 112 and the third radiating portion 126. The second radiating portion 122 extends outward in a direction away from the first radiating portion 112. The second radiating portion 122 is composed of the first branch portion 123 and the second branch portion 124. The first branch portion 123 and the second branch portion 124 both extend outward in a direction away from the first radiating portion 112. In this embodiment, the first branching portion 123 is configured to resonate to generate a wireless signal transmission and reception in a second frequency band, wherein the frequency of the second frequency band is between 1850 MHz and 1990 MHz. The second branching unit 124 is configured to generate a third frequency band for wireless signal transmission and reception, wherein the frequency of the third frequency band is between 1710.2 MHz and 1879.8 MHz.

[0013]

In the embodiment, the third radiating portion 126 further has a connecting portion 126a, and one end of the connecting portion 126a of the third radiating portion 126 is connected to the second connecting portion 121b of the second extending portion 121 and the third extending portion 125. The third connecting portion 125b is electrically connected to the third feeding end 125a through the second connecting portion 121b and the third connecting portion 125b. The other end of the third radiating portion 126 has a third branch portion 127 and a fourth branch portion 128. In other words, the other end of the connecting segment portion 126a is connected to the third branch portion 127 and the fourth branch portion 128. The third branch portion 127 and the fourth branch portion 128 are both formed in a rectangular structure, the third branch portion 127 extends away from the second radiating portion 122, and the fourth branch portion 128 is directed toward the second radiation. The direction of the portion 122 extends, and the area of the third branch portion 127 is smaller than the area of the fourth branch portion 128. The third branching unit 127 is configured to generate a fourth frequency band for wireless signal transmission and reception, wherein the frequency of the fourth frequency band is between 880 MHz and 960 MHz. The fourth branching unit 128 is configured to generate a fifth frequency band of the wireless signal transmission and reception, wherein the frequency of the fifth frequency band is between 824 MHz and 894 MHz.

[0014]

Please refer to Fig. 2, where the second figure is a partial enlarged view of the five-band antenna of the three feed points of the smart phone shown in Fig. 1. In this embodiment, the five-input five-band antenna 1 of the smart phone of the present invention may be disposed on the carrier 3, wherein the carrier 3 may be, but not limited to, a plastic plate. In some embodiments, the carrier 3 has a first conduction at a position of the first feed end 111a, the second feed end 121a and the third feed end 125a of the five-band antenna 1 of the three-input point of the smart phone. a hole 31, a second via hole 32, and a third via hole 33, wherein the first via hole 31, the second via hole 32, and the third via hole 33 penetrate the carrier 3, and the first via hole 31 and the second via hole 32 and the inner wall of the third via hole 33 are plated with a metal material having a conductive property by electroplating, so that the first via hole 31, the second via hole 32, and the third via hole 33 have conductivity. One port of the first via hole 31, the second via hole 32 and the third via hole 33 is electrically connected to the first feeding end 111a, the second feeding end 121a and the third feeding end 125a, respectively.

[0015]

Please refer to Figure 3, where the third figure is the reverse structure of the three-input five-band antenna of the smart phone shown in Figure 1. The third feeding point of the smart phone has a first guiding end 21, a second guiding end 22 and a third guiding end 23 on the reverse side of the carrier 3 provided by the five-band antenna 1, wherein the first guiding end 21, The two guiding ends 22 and the third guiding ends 23 are separated from each other. In some embodiments, the other ports of the first via hole 31, the second via hole 32, and the third via hole 33 are respectively connected to the first conductive terminal 21, the second conductive terminal 22, and the third conductive terminal 23, respectively. The first conductive via 31, the second via 32, and the third via 33 can be connected to the first via 21 and the second via, for example, but not limited to, a conductive metal layer connection or a flying wire connection. The terminal end 22 is electrically connected to the third guiding end 23 . Therefore, when the five-band antenna 1 of the smart phone of the present invention is assembled on the body of the smart phone, the external circuit can pass through the first guiding end 21, the second guiding end 22 and the third guiding end. The terminal 23 and the first via hole 31, the second via hole 32 and the third via hole 33 feed the ground signal and the high frequency signal to the first feeding end 111a, the second feeding end 121a and the third feeding end 125a, In turn, the function of transmitting and receiving wireless RF signals is achieved.

[0016]

Figure 4 is a comparison of the standing wave ratio versus the frequency variation of the first frequency band generated by the three-input five-band antenna of the preferred embodiment of the present invention, and Figure 5 is the third feeding point of the preferred embodiment of the present invention. Comparison of the standing wave ratio versus frequency variation of the second and third bands generated by the band antenna, and FIG. 6 is the fourth and fifth bands generated by the five-band antenna of the three feed points of the preferred embodiment of the present invention. Comparison of the standing wave ratio versus frequency variation of the frequency band. As shown in Figures 4 to 6, the A-band in Figure 4 is the first frequency band (1920MHz to 2170MHz), and the B-band and C-band in Figure 5 are the second frequency band (1850MHz to 1990MHz). With the third frequency band (1710.2 MHz to 1879.8 MHz), the D-band and E-band in Figure 6 are the fourth frequency band (880MHz to 960MHz) and the fifth frequency band (824MHz to 894MHz), respectively. The vertical axis of Fig. 4 to Fig. 6 is the standing wave ratio (SWR) of the five-band antenna 1 of the three-input point of the smart phone, and the gain values of the return loss are mutually The linear relationship can be calculated by converting the standing wave ratio value into the gain value of the foldback loss, and the horizontal axis is the resonant frequency of the five-band antenna 1 of the three feed points of the smart phone. The standing wave ratio will vary with frequency. Generally, the frequency band with a standing wave ratio of, for example, 3 or less represents that the antenna has a good effect in this frequency band. Therefore, it can be seen from Fig. 4 to Fig. 6 that the A to E band is resident. The wave ratio is far less than 3, so the five-band antenna 1 of the smart phone's three-input point can indeed generate five-band A to E based on the existing specifications and usage standards in the field, and the third type of smart phone in this case The frequency bands generated by the five-band antenna 1 of the feed point have a good performance.

[0017]

In summary, the five-band antenna of the smart phone of the present invention transmits the first radiating portion of the special form, the first branch portion and the second branch portion of the second radiating portion, and the third radiating portion. The three-branch portion and the fourth branch portion achieve high-efficiency and high-gain five-band resonance, and the technique of using a planar inverted-inverted antenna with two feed points must be used for the purpose of multi-band resonance in the prior art. Limitation, this case uses a single antenna with three feed points to achieve the effect of five-band resonance. Therefore, the five-band antenna of the smart phone of the present case not only effectively improves the performance of the five-band resonance and improves the gain, and Compared with the planar inverted-F antenna with the two feed points of the conventional complex array, the area can be greatly reduced, and the manufacturing cost is also greatly reduced.

[0018]

This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

1‧‧‧3 feed point five-band antenna

11‧‧‧First metal component

111‧‧‧First Extension

111a‧‧‧first feed end

111b‧‧‧First connection segment

112‧‧‧First Radiation Department

112a‧‧‧The first paragraph

112b‧‧‧The second paragraph

112c‧‧‧The third paragraph

12‧‧‧Second metal components

121‧‧‧Second extension

121a‧‧‧second feed end

121b‧‧‧second connection

122‧‧‧Second Radiation Department

123‧‧‧First Branch

124‧‧‧Second branch

125‧‧‧ Third Extension

125a‧‧‧ third feed end

125b‧‧‧ third connection

126‧‧ Third Radiation Department

126a‧‧‧Connected section

127‧‧ Third Branch

128‧‧‧ Fourth Branch

Claims (10)

[Item 1] A five-band antenna for a smart phone with three feed points, comprising:
a first metal component comprising:
a first extending portion having a first feeding end and a first connecting portion, wherein the first feeding end is configured to feed the signal; and a first radiating portion is connected to the first connecting portion, and The first radiating portion includes a first segment, a second segment, and a third segment, and the first segment, the second segment, and the first portion are configured to generate and receive a first frequency band. The three segments are sequentially connected; and a second metal component is spaced from the first metal component and includes:
a second extending portion having a second feeding end and a second connecting portion, wherein the second feeding end is configured to feed the signal;
a second radiating portion is connected to the second connecting portion, and includes a first branch portion and a second branch portion, wherein the first branch portion and the second branch portion are respectively a strip structure, and the first branch portion The branch and the second branch are respectively configured to generate and receive wireless signals in a second frequency band and a third frequency band;
a third extending portion having a third feeding end and a third connecting portion, wherein the third feeding end is connected to the feeding signal, the third connecting portion is connected to the second connecting portion; a third radiating portion, the one end of the third radiating portion is connected to the second connecting portion and the third connecting portion, and the other end of the third radiating portion has a third branch portion and a fourth branch portion, the third portion The branch portion and the fourth branch portion respectively have a rectangular structure, the third branch portion extends away from the second radiation portion, and the fourth branch portion extends from the direction toward the second radiation portion The third branching portion and the fourth branching portion are respectively configured to generate and receive wireless signals of a fourth frequency band and a fifth frequency band. [Item 2] The three-input five-band antenna of the smart phone of claim 1, wherein the second radiating portion extends outward in a direction away from the first radiating portion.
[Item 3] The three-input five-band antenna of the smart phone according to the first aspect of the invention, wherein the first side of the first segment is connected to the first connecting segment, and the first segment is a second side is connected to one of the first sides of the second section, a second side of the second section is connected to the first side of the third section, and wherein the first section, the first The second section and the third section form a trough-like structure, and one of the slots is open toward the second radiating portion.
[Item 4] The three-input five-band antenna of the smart phone of claim 1, wherein the first extension and the second extension are respectively a strip-shaped structure, and the third extension is the second The extension portion is provided with one of the U-shaped structures, and the first extension portion and the second extension portion are arranged in parallel and spaced apart from each other.
[Item 5] The three-input five-band antenna of the smart phone of claim 1, wherein the second radiating portion is between the first radiating portion and the third radiating portion.
[Item 6] The three-input five-band antenna of the smart phone of claim 1, wherein the second connecting segment is connected to one of the long sides of the first branch, and one of the long sides of the second branch And connecting to the other long side of the first branch portion, and the length of the second branch portion is relatively longer than the length of the first branch portion.
[Item 7] The three-input five-band antenna of the smart phone according to claim 1, wherein the third radiating portion further has a connecting portion, and one end of the connecting portion is connected to the second extending portion. The second connecting section and the third connecting section of the third extending portion, the other end of the connecting section has the third branching portion and the fourth branching portion.
[Item 8] The three-input five-band antenna of the smart phone according to claim 1, wherein the second feeding end is electrically connected to the third feeding end, the first feeding end and the first The three-input system is configured to feed a ground signal, and the second feed end is configured to feed a high-frequency signal.
[Item 9] For example, the three-input five-band antenna of the smart phone described in claim 1 wherein the frequency of the first frequency band is between 1920 MHz and 2170 MHz, and the frequency of the second frequency band is between 1850 MHz and 1990 MHz. The frequency of the frequency band is between 1710.2 MHz and 1879.8 MHz, the frequency of the fourth frequency band is between 880 MHz and 960 MHz, and the frequency of the fifth frequency band is between 824 MHz and 894 MHz.
[Item 10] The three-input five-band antenna of the smart phone of claim 1, wherein the third extension is a coupling element.