WO2017210869A1 - Adjustable multi-frequency antenna - Google Patents

Abstract

Disclosed is an adjustable multi-frequency antenna, comprising a grounding plate; a dielectric substrate arranged on the grounding plate and comprising first and second dielectric portions, wherein the first and second dielectric portions are respectively made of materials with a first dielectric constant and a second dielectric constant; a first radiation patch arranged at a position, corresponding to the first dielectric portion, on the dielectric substrate so as to possess a first resonance centre frequency; and a second radiation patch arranged at a position, corresponding to the second dielectric portion, on the dielectric substrate so as to possess a second centre frequency. The first dielectric constant and the second dielectric constant are different, and therefore, the first resonance centre frequency and the second resonance centre frequency are different. When the first radiation patch and the second radiation patch work simultaneously, the first radiation patch and the second radiation patch are coupled and possess a third resonance centre frequency. By selecting different radiation patches to carry out work, an antenna can be adjusted to work at different frequencies.

Description

 Manual Title: An Adjustable Multi-Frequency Antenna

 Technical field

 [0001] The present invention relates to the field of antenna technologies, and in particular, to an adjustable multi-frequency antenna.

 Background technique

 [0002] With the continuous advancement of technology, mobile terminals such as mobile phones are becoming more and more intelligent, with more and more functions, and the structure is becoming more and more complicated. Therefore, the requirements for the antenna are also getting higher and higher, mainly because the space reserved for the antenna is getting smaller and smaller, but the frequency band of the antenna is required to be wider and wider to match the frequency requirements of different protocol communication modules, such as Bluetooth module, 3G. Communication module, WiFi module, and RFID communication module.

 [0003] Although some existing antennas can be used to select antennas of different lengths by setting switches or to adjust the antenna frequency by setting adjustable devices, these solutions cannot significantly save the size of the antenna, and can be used for antennas. The frequency of work is also small.

 [0004] Therefore, prior art antennas have some drawbacks.

 technical problem

 [0005] In view of the fact that the volume of the antenna cannot be significantly saved in the prior art, and the number of frequencies available for the antenna operation is few defects, the present invention provides an adjustable multi-frequency antenna.

 Problem solution

 Technical solution

[0006] The technical solution proposed by the present invention with respect to the above technical problems is as follows:

In one aspect, an adjustable multi-frequency antenna is provided, including:

[0008] a ground plate;

 [0009] a dielectric substrate disposed on the ground plate; the dielectric substrate includes a first dielectric portion and a second dielectric portion, wherein the first and second dielectric portions respectively have a first dielectric constant and a second dielectric Electrical constant material

[0010] a first radiation patch disposed on the dielectric substrate at a position corresponding to the first dielectric portion to have a first resonant center frequency;

[0011] a second radiation patch is disposed on the dielectric substrate at a position corresponding to the second medium portion, thereby Preparing a second center frequency;

 [0012] the first dielectric constant is different from the second dielectric constant, and thus the first resonant center frequency is different from the second resonant center frequency, when the first radiating patch and the second radiating patch In the same manner, the first radiating patch is coupled to the second radiating patch and has a third resonant center frequency.

 [0013] Preferably, the dielectric substrate further includes a third dielectric portion, the third dielectric portion is made of a material having a third dielectric constant; the adjustable multi-frequency antenna further includes a third radiation patch, Providing a position corresponding to the third medium portion on the dielectric substrate to provide a fourth resonant center frequency; the third radiating patch can be coupled with the first and/or second radiating patches, thereby having a plurality of Resonant center frequency.

 [0014] Preferably, the third dielectric constant is the same as the first dielectric constant or the second dielectric constant.

 [0015] Preferably, the third dielectric constant is different from the first and second dielectric constants.

 [0016] Preferably, the first, second, and third radiation patches are the same size.

 [0017] Preferably, the first, second, and third radiation patches are different in size.

 [0018] In another aspect, an adjustable multi-frequency antenna is provided, including:

 [0019] a ground plate;

 [0020] a dielectric substrate disposed on the ground plate; the dielectric substrate includes at least four dielectric portions, each dielectric portion being made of one material, and at least two of the materials of the at least four dielectric portions Different dielectric constants;

 [0021] At least four radiation patches are respectively disposed on the dielectric substrate at positions corresponding to the at least four dielectric portions such that the tunable multi-frequency antenna has a plurality of resonant center frequencies.

[0022] Preferably, the at least four radiation patches are the same size.

[0023] Preferably, the at least four radiation patches are different in size.

 Advantageous effects of the invention

 Beneficial effect

[0024] Embodiments of the present invention have the following beneficial effects: by providing a plurality of dielectric portions having different dielectric constants on a dielectric substrate, each radiating patch operates independently and has a different resonant center frequency, wherein Any two or more radiating patches work, and a plurality of coupled resonant frequencies can be formed, which greatly increases the number of antenna operating frequencies per unit area. The tunable multi-frequency antenna of the present application has a finite number of radiating patches, which greatly increases the number of resonant frequencies of the antenna, so that the antenna can be covered from a low Frequency to intermediate frequency and then to the high frequency of each frequency band.

 Brief description of the drawing

 DRAWINGS

 [0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work.

 1 is a schematic structural diagram of a tunable multi-frequency antenna according to a first embodiment of the present invention;

 2 is a plan view of the antenna shown in FIG. 1; [0027] FIG.

 3 is a schematic structural diagram of an adjustable multi-frequency antenna according to a second embodiment of the present invention;

4 is a plan view of the antenna shown in FIG. 2; [0029] FIG.

 5 is a schematic structural diagram of a tunable multi-frequency antenna according to a third embodiment of the present invention;

Figure 6 is a plan view of the antenna shown in Figure 5;

 7 is a schematic structural diagram of a tunable multi-frequency antenna according to a fourth embodiment of the present invention;

8 is a plan view of the antenna shown in FIG. 7.

Embodiments of the invention

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

 [0035] Embodiment 1

[0036] This embodiment provides an adjustable multi-frequency antenna. Referring to FIGS. 1 and 2, the adjustable multi-frequency antenna 100 includes: a grounding plate 11, a dielectric substrate 12, a first radiating patch 131, and a second radiating patch. Slice 132. The ground plane 11 is a conductive material that is connected to the ground, typically a copper or tin foil. The dielectric substrate 12 is disposed on the ground plate 11. The dielectric substrate 12 includes a first dielectric portion 121 and a second dielectric portion 122, the first and second dielectric portions respectively having a first dielectric constant ε „ and a second dielectric constant ε ₁₂

Made of materials. The first radiation patch 131 is disposed on the dielectric substrate 12 at a position corresponding to the first dielectric portion 121 The first resonant center frequency f _{u is provided} . The second radiation patch 132 is disposed on the dielectric substrate 12 at a position corresponding to the second dielectric portion 122, thereby providing a second resonance center frequency f ₁₂ .

[0037] Since the first dielectric constant ε′ is different from the second dielectric constant ε ₁₂ , the first resonance center frequency 1 ′′ is different from the second resonance center frequency f ₁₂ . When the first radiating patch 131 or the second radiating patch 132 is operated separately, the frequencies of the antennas are respectively f ₁₂ . When the first radiating patch 131 and the second radiating patch 132 are simultaneously operated, the first radiating patch 131 is coupled to the second radiating patch 132, and the antenna thus has a third resonant center frequency f ₁₃ .

[0038] Generally, for a radiating patch, its individual working turns itself may have at least one low frequency resonant center frequency and at least one high frequency resonant center frequency. That is, the first resonant center frequency f and the second resonant center frequency f ₁₂ may themselves include a plurality of resonant center frequencies. Then, when the first radiating patch 131 is coupled to the second radiating patch 132, the resulting coupling The resonance frequency is more. For example, when the first resonance center frequency f and the second resonance center frequency f ₁₂ both include a low frequency resonance center frequency and a high frequency resonance center frequency 吋, then the first radiation patch 131 Coupled with the second radiating patch 132, four new coupled resonant frequencies can be generated.

 [0039] The present application sets two dielectric portions having different dielectric constants on a dielectric substrate such that each radiation patch operates independently and has a different resonant center frequency, and the two radiation patches work and can form Multiple coupling resonant frequencies, which greatly increases the number of antenna operating frequencies per unit area. The tunable multi-frequency antenna of the present application has a finite number of radiating patches, which greatly increases the number of resonant frequencies of the antenna, so that the antenna can cover various frequency bands from low frequency to intermediate frequency to high frequency.

 [0040] Embodiment 2

[0041] This embodiment provides another adjustable multi-frequency antenna. As shown in FIGS. 3 and 4, the adjustable multi-frequency antenna 200 includes: a grounding plate 21, a dielectric substrate 22, a first radiating patch 231, and a first Two radiation patches 232 and third radiation patches 233. The ground plane 21 is a conductive material that is connected to the ground, typically a copper or tin foil. The dielectric substrate 22 is disposed on the ground plate 21. The dielectric substrate 22 includes a first dielectric portion 221, a second dielectric portion 222, and a third dielectric portion 223, and the first, second, and third dielectric portions respectively have a first dielectric constant ε ₂₁ and a second dielectric constant ε 2 ₂ and a material having a third dielectric constant ε ₂₃ . The first radiation patch 231 is disposed on the dielectric substrate 22 at a position corresponding to the first dielectric portion 221, thereby providing a resonance center frequency f ₂₁ . The second radiation patch 232 is disposed on the dielectric substrate 22 at a position corresponding to the second dielectric portion 222, thereby providing a resonance center frequency f ₂₂ . Third radiation The patch 233 is disposed on the dielectric substrate 22 at a position corresponding to the third dielectric portion 223, thereby having a center frequency f

23°

[0042] Since the first dielectric constant ε _{21 is} different from the second dielectric constant ε ₂₂ , the resonance center frequency f _{21 is} different from the resonance center frequency f ₂₂ . When the first radiating patch 231 or the second radiating patch 232 is operated separately, the center frequency of the antenna is f ₂₁ or f _{22 , respectively} . When the first radiation patch 231 and the second radiation patch 232 with the work inch inch, coupling first radiation patch 231 and the second radiation patch 232, having a center frequency of the antenna so f _23.

[0043] Generally, for a radiating patch, its individual working turns itself may have at least one low frequency resonant center frequency and at least one high frequency resonant center frequency. That is, the first resonant center frequency f and the second resonant center frequency f ₁₂ may themselves include a plurality of resonant center frequencies. Then, when the first radiating patch 131 is coupled to the second radiating patch 132, the resulting coupling The resonance frequency is more. For example, when the first resonance center frequency f and the second resonance center frequency f ₁₂ both include a low frequency resonance center frequency and a high frequency resonance center frequency 吋, then the first radiation patch 131 Coupled with the second radiating patch 132, four new coupled resonant frequencies can be generated.

[0044] In a preferred embodiment of the invention, the third dielectric constant ε ₂₃ is different from both the first dielectric constant ε ₂₁ and the second dielectric constant ε ₂₁ . Thus, three resonant center frequencies can be obtained by operating any of the first, second, and third radiating patches, and by working on any two of the first, second, and third radiating patches. To obtain the other three resonant center frequencies, another resonant center frequency can be obtained by letting the first, second, and third radiating patches operate simultaneously. Therefore, when the dielectric portion in the dielectric substrate is increased to three turns, the adjustable operating frequency of the antenna can be greatly increased.

 [0045] Of course, in other embodiments provided by the present invention, the third dielectric constant may also be the same as the first or second dielectric constant. Thus, although some frequency bands are sacrificed, the manufacturing process of the antenna can be simplified and the cost can be reduced.

 [0046] Further, as shown in FIG. 2, the first and second radiating patches are the same size. Of course, the dimensions of the first, second and third radiation patches can all be the same. The same size simplifies the manufacturing process and correspondingly reduces manufacturing costs.

[0047] Further, as shown in FIG. 4, the sizes of the first, second, and third radiating patches may also be different, so that the area of the antenna can be fully utilized to maximize the number of radiating patches per unit area. The number of bands per unit area is maximized. [0048] Embodiment 3

[0049] This embodiment provides an adjustable multi-frequency antenna of another structure. As shown in FIG. 5-6, the adjustable multi-frequency antenna 300 includes: a grounding plate 31, a dielectric substrate 32, and a first radiating patch. 331. The second radiation patch 332, the third radiation patch 333, and the fourth radiation patch 334. The ground plane 31 is a conductive material that is connected to the ground, typically a copper or tin foil. The dielectric substrate 32 is disposed on the ground plate 31. The dielectric substrate 32 includes a first dielectric portion 321, a second dielectric portion 322, a third dielectric portion 323, and a fourth dielectric portion 324, the first, second, third, and fourth dielectric portions respectively having a first dielectric constant ε _{31. A material} having a second dielectric constant ε ₃₂ , a third dielectric constant ε _{33 ,} and a fourth dielectric constant ε ₃₄ . The first radiation patch 331 is disposed on the dielectric substrate 32 at a position corresponding to the first dielectric portion 321 to have a resonance center frequency f ₃₁ . The second radiation patch 332 is disposed on the dielectric substrate 32 at a position corresponding to the second dielectric portion 322 to have a resonance center frequency f ₃₂ . The third radiation patch 333 is disposed on the dielectric substrate 32 at a position corresponding to the third dielectric portion 323, thereby providing a center frequency f ₃₃ . The fourth radiation patch 334 is disposed on the dielectric substrate 32 at a position corresponding to the fourth dielectric portion 324 to have a center frequency f ₃₄ .

[0050] The above four dielectric constants ε ₃₁ , ε ₃₂ , ε ₃₃ , and ε _{34 have} at least two different dielectric constants. In a preferred embodiment provided by the present invention, the four dielectric constants ε ₃₁ , ε ₃₂ , ε ₃₃ , and ε _{34 are} different from each other. Thus by operating any of the four radiation patches described above, the antenna can achieve at least two different resonant frequencies. By operating any two of the above four radiation patches, the antenna can have at least two other different resonant center frequencies. By operating any of the four radiation patches described above, the antenna can have at least two other different resonant center frequencies. By operating the four radiating patches described above, the antenna can also have another resonant center frequency. Therefore, by selecting a different number of radiating patches to work, the resonant frequency of the antenna can be adjusted and a plurality of different resonant center frequencies can be obtained. In this way, the antenna has a very large operating band, which can meet the requirements of the actual application for the frequency band.

 [0051] Further, as shown in FIG. 6, the sizes of the first, second, third, and fourth radiation patches may be different.

 Thus, the area of the antenna can be fully utilized to maximize the number of radiating patches per unit area, thereby maximizing the number of bands per unit area.

 Embodiment 4

[0053] This embodiment provides another adjustable multi-frequency antenna. Referring to FIGS. 7 and 8, the adjustable multi-frequency antenna 400 includes: a ground plate 41, a dielectric substrate 42, a first radiation patch 431, and a second radiation. Patch 432, third radiation sticker The sheet 433, the fourth radiating patch 434, and the fifth radiating patch 435. The ground plane 41 is a conductive material that is connected to the ground, typically a copper or tin foil. The dielectric substrate 42 is disposed on the ground plate 41. The dielectric substrate 42 includes a first dielectric portion 421, a second dielectric portion 422, a third dielectric portion 423, a fourth dielectric portion 424, and a fifth dielectric portion 425, first, second, third, fourth, and fifth media. The portions are respectively made of a material having a first dielectric constant ε ₄₁ , a second dielectric constant ε ₄₂ , a third dielectric constant ε ₄₃ , a fourth dielectric constant ε _{44 ,} and a fifth dielectric constant ε ₄₅ . The first radiation patch 431 is disposed on the dielectric substrate 42 at a position corresponding to the first dielectric portion 421, thereby providing a resonance center frequency f ₄₁ . The second radiation patch 432 is disposed on the dielectric substrate 42 at a position corresponding to the second dielectric portion 422, thereby providing a resonance center frequency f ₄₂ . The third radiation patch 433 is disposed on the dielectric substrate 42 at a position corresponding to the third dielectric portion 423 to have a center frequency f ₄₃ . The fourth radiation patch 434 is disposed on the dielectric substrate 42 at a position corresponding to the fourth dielectric portion 424, and is provided with a center frequency fifth radiation patch 435 disposed on the dielectric substrate 42 at a position corresponding to the fourth dielectric portion 425, thereby providing Center frequency f ₄₅

[0054] The above five dielectric constants ε ₃₁ , ε ₃₂ , ε ₃₃ , ε ₃₄ , and ε _{35 have} at least two different dielectric constants. In a preferred embodiment provided by the present invention, the five dielectric constants ε ₃₁ , ε ₃₂ , ε ₃₃ , ε ₃₄ , and ε _{35 are} different from each other. Thus by operating any of the five radiation patches described above, the antenna can achieve at least two different resonant frequencies. By operating any two of the above four radiation patches, the antenna can have at least two other different resonant center frequencies. By operating any of the four radiation patches described above, the antenna can have at least two other different resonant center frequencies. By operating the four radiating patches described above, the antenna can also have another resonant center frequency. Therefore, by selecting a different number of radiating patches to work, the resonant frequency of the antenna can be adjusted and a plurality of different resonant center frequencies can be obtained. In this way, the antenna has a very large operating band, which can meet the requirements of the actual application for the frequency band.

 Further, as shown in FIG. 8, the sizes of the first, second, third, fourth, and fifth radiation patches may be the same. The same size simplifies the manufacturing process and correspondingly reduces manufacturing costs.

 The above disclosure is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and Equivalent variations of the claims of the invention are still within the scope of the invention.

Claims

 Claim An adjustable multi-frequency antenna, comprising: Grounding plate a dielectric substrate disposed on the ground plate; the dielectric substrate includes a first dielectric portion and a second dielectric portion, the first and second dielectric portions respectively having a first dielectric constant and a second dielectric constant Made of materials; a first radiation patch disposed on the dielectric substrate at a position corresponding to the first dielectric portion to provide a first resonant center frequency; a second radiation patch disposed on the dielectric substrate at a position corresponding to the second dielectric portion to provide a second center frequency; The first dielectric constant is different from the second dielectric constant, and thus the first resonant center frequency is different from the second resonant center frequency, when the first radiating patch and the second radiating patch work simultaneously The first radiation patch is coupled to the second radiation patch and has a third resonant center frequency. The tunable multi-frequency antenna according to claim 1, wherein the dielectric substrate further comprises a third dielectric portion, the third dielectric portion being made of a material having a third dielectric constant; The multi-frequency antenna further includes a third radiation patch disposed on the dielectric substrate at a position corresponding to the third dielectric portion to provide a fourth resonant center frequency; the third radiating patch is connectable to the first and/or Or the second radiating patch is coupled to have a plurality of resonant center frequencies. The tunable multi-frequency antenna according to claim 2, wherein said third dielectric constant is the same as said first dielectric constant or said second dielectric constant. The tunable multi-frequency antenna according to claim 2, wherein said third dielectric constant is different from said first and second dielectric constants. The tunable multi-frequency antenna of claim 2, wherein the first, second, and third radiating patches are the same size. The tunable multi-frequency antenna according to claim 2, wherein the first, second, and third radiating patches are different in size. [Claim 7] An adjustable multi-frequency antenna, comprising:  Grounding plate  a dielectric substrate disposed on the ground plate; the dielectric substrate includes at least four dielectric portions, each dielectric portion being made of a material, and at least two different dielectric materials of the at least four dielectric portions Electrical constant  At least four radiation patches are respectively disposed on the dielectric substrate at positions corresponding to the at least four dielectric portions such that the tunable multi-frequency antenna has a plurality of resonant center frequencies. [Aspect 8] The tunable multi-frequency antenna according to claim 7, wherein the at least four radiation patches are the same size.  [Claim 9] The tunable multi-frequency antenna of claim 7, wherein the at least four radiation patches are different in size.