CN109524779B - Broadband patch antenna of pixel array - Google Patents
Broadband patch antenna of pixel array Download PDFInfo
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- CN109524779B CN109524779B CN201811493338.XA CN201811493338A CN109524779B CN 109524779 B CN109524779 B CN 109524779B CN 201811493338 A CN201811493338 A CN 201811493338A CN 109524779 B CN109524779 B CN 109524779B
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- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 230000005855 radiation Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 15
- 238000004088 simulation Methods 0.000 description 13
- 238000004891 communication Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/061—Two dimensional planar arrays
- H01Q21/065—Patch antenna array
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Abstract
The invention discloses a broadband patch antenna of a pixel array, which comprises a first dielectric plate, a second dielectric plate and a third dielectric plate, wherein the first dielectric plate, the second dielectric plate and the third dielectric plate are sequentially arranged from bottom to top; the first copper-clad layer is provided with a T-shaped feeder line and a tuning branch connected with the T-shaped feeder line, the grounding plate is provided with a coupling aperture, the second copper-clad layer is provided with a rectangular patch, and the third copper-clad layer is provided with a pixel array; the first dielectric plate is provided with a feed port, the feed port is connected with a T-shaped feeder line, signals are fed from the T-shaped feeder line to the rectangular patch and the pixel array through coupling aperture coupling through the feed port, and finally the signals are radiated out through the rectangular patch and the pixel array. The antenna stably works in the frequency range of 2G-4GHz, and the return loss of the antenna is less than-10 dB.
Description
Technical Field
The invention relates to the technical field of antennas, in particular to a broadband patch antenna of a pixel array.
Background
With the advent of the fifth generation communication system, there is a higher demand for the communication capacity and transmission rate of the system due to the rapid development of wireless communication in recent years. Patch antennas are widely used in wireless communication systems because of their light weight, small size, easy conformality, easy processing, low cost, etc. However, microstrip patch antennas are often limited by their operating bandwidth being too narrow. For bandwidth expansion of patch antennas, many scholars have proposed expansion techniques of patch antennas by continuously improving and researching their characteristics. However, some methods have problems such as reduced efficiency, reduced gain, unstable pattern, etc.
The prior art is investigated and known, and the specific steps are as follows:
Li Qifang professor and the schdule proposed loading a U-slot to widen the bandwidth in 1995. The loading of the U-shaped slot causes the patch to form a multi-tuned circuit, thereby widening the frequency band. The latter widening of the bandwidth by many loading slots is also based on this principle.
Tarmonski et al propose to widen the bandwidth using a "caliber-stacked patch" (Aperture-STACKED PATCH) design approach.
In general, there are many studies on expanding the broadband of patch antennas in the existing work, but many designs make the antenna loss large and the efficiency low. Or the bandwidth is widened by forming a multi-tuning loop by a slot adding method and the like, but the gain and the waveform of the antenna are affected. Therefore, it is of great importance to design a simple broadband high-gain patch antenna.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provide a broadband patch antenna of a pixel array. The antenna unit can stably work in the range of 2GHz-4GHz, the return loss of the antenna is less than-10 dB in the frequency range of 2GHz-4GHz, and the gain in the frequency range of 2GHz-4GHz is kept to be about 9 dB. The whole antenna has simple structure, convenient processing and low cost.
The aim of the invention can be achieved by adopting the following technical scheme:
The broadband patch antenna of the pixel array comprises a first dielectric plate 1, a second dielectric plate 2 and a third dielectric plate 3 which are sequentially arranged from bottom to top, wherein a first air layer 8 is arranged between the first dielectric plate 1 and the second dielectric plate 2, a second air layer 9 is arranged between the second dielectric plate 1 and the third dielectric plate 3, a first copper-clad layer 4 is arranged on the lower surface of the first dielectric plate 1, a grounding plate 5 is arranged on the upper surface of the first dielectric plate 1, a second copper-clad layer 6 is arranged on the upper surface of the second dielectric plate 2, and a third copper-clad layer 7 is arranged on the upper surface of the third dielectric plate 3;
the first copper-clad layer 4 is provided with a T-shaped feeder line 13 and a tuning branch 14 connected with the T-shaped feeder line 13, the grounding plate 5 is provided with a coupling aperture 12, the second copper-clad layer 6 is provided with a rectangular patch 11, and the third copper-clad layer 7 is provided with a pixel array 10;
the first dielectric plate 1 is provided with a feed port 15, the feed port 15 is connected with a T-shaped feed line 13, signals are fed through the feed port 15, signals are coupled and fed from the T-shaped feed line 13 to the rectangular patch 11 and the pixel array 10 through the coupling aperture 12, and finally the signals are radiated through the rectangular patch 11 and the pixel array 10.
Further, the feed port 15 serves as both an input port and an output port of the wideband patch antenna.
Further, the pixel array 10 is used to increase the bandwidth of a wideband patch antenna.
Further, the rectangular patch 11 is used as a radiation source for the entire wideband patch antenna.
Further, the tuning stub 14 is used to introduce a resonant mode to expand the bandwidth.
Further, the pixel array 10 is composed of 6×6 square patches, wherein each square patch has a size of 7mm and a slit of 0.7mm.
Further, the first air layer 8 is used to reduce the coupling between the rectangular patch 11 and the coupling aperture 12, and to increase the frequency interval between the resonant mode caused by the rectangular patch 11 and the resonant mode caused by the coupling aperture 12.
Further, the second air layer 9 is used to improve the gain and bandwidth of the wideband patch antenna.
Further, the dielectric constants of the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 are 2.55, the loss tangent is 0.0029, and the thicknesses of the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 are 1.5mm.
Further, the thickness of the first air layer 8 is 10mm, and the thickness of the second air layer 9 is 9mm.
Compared with the prior art, the invention has the following advantages and effects:
1. the working frequency of the broadband patch antenna of the pixel array disclosed by the invention is in a frequency range exceeding 2GHz-4GHz, and the relative bandwidth is more than 67%.
2. The broadband patch antenna of the pixel array disclosed by the invention has very flat gain in the frequency range of 2GHz-4GHz and is stable in the range of about 9 dB.
3. The broadband patch antenna beam of the pixel array disclosed by the invention has good characteristics in the frequency range of 2GHz-4 GHz.
4. The broadband patch antenna of the pixel array disclosed by the invention has the advantages of simplicity in processing, light weight, low processing cost, wide working bandwidth and good application prospect.
Drawings
FIG. 1 is a 3D block diagram of a wideband patch antenna for a pixel array of the present disclosure;
FIG. 2 is a dielectric block diagram of a wideband patch antenna of a pixel array in accordance with the present disclosure;
FIG. 3 is a pixel array diagram of a wideband patch antenna of a pixel array in accordance with the present disclosure;
FIG. 4 is a rectangular patch architecture diagram of a wideband patch antenna for a pixel array in accordance with the present disclosure;
FIG. 5 is a block diagram of a wideband patch antenna feed and coupling aperture for a pixel array in accordance with the present disclosure;
FIG. 6 is a graph of simulation results of return loss S11 for a wideband patch antenna of a pixel array in accordance with the present disclosure;
FIG. 7 is a graph of simulation results of a wideband patch antenna gain curve for a pixel array in accordance with the present disclosure;
Fig. 8 is a simulation result diagram of a pattern of each frequency point of a wideband patch antenna of a pixel array disclosed in the present invention, fig. 8 (a) is a simulation result diagram of a pattern of a 2GHz frequency point, fig. 8 (b) is a simulation result diagram of a pattern of a 2.5GHz frequency point, fig. 8 (c) is a simulation result diagram of a pattern of a 3GHz frequency point, fig. 8 (d) is a simulation result diagram of a pattern of a 3.5GHz frequency point, and fig. 8 (e) is a simulation result diagram of a pattern of a 4GHz frequency point;
The three-dimensional antenna comprises a first dielectric plate, a second dielectric plate, a third dielectric plate, a first copper-clad layer, a 5-grounding plate, a second copper-clad layer, a third copper-clad layer, a first air layer, a second air layer, a 10-pixel array, a 11-rectangular patch, a12 coupling aperture, a 13-T-shaped feeder, a 14-tuning branch and a 15-feeding port, wherein the first dielectric plate, the second dielectric plate, the third dielectric plate, the first copper-clad layer, the 4-T-shaped feeder, the 5-grounding plate, the second copper-clad layer, the third copper-clad layer, the 8-first air layer, the 9-second air layer, the 10-pixel array, the 11-rectangular patch and the 12 coupling aperture are all arranged.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1, a 3D block diagram of a broadband patch antenna for a pixel array of the present invention is shown.
Referring to fig. 2, 3, 4 and 5, the broadband patch antenna of a pixel array disclosed in this embodiment includes a first dielectric plate 1, a first copper-clad layer 4 located on a lower surface of the first dielectric plate 1, a ground plate 5 located on an upper surface of the first dielectric plate 1, a second dielectric plate 2, a second copper-clad layer 6 located on an upper surface of the second dielectric plate 2, a third dielectric plate 3, and a third copper-clad layer 7 located on an upper surface of the third dielectric plate 3; a first air layer 8 is provided between the first dielectric plate 1 and the second dielectric plate 2, and a second air layer 9 is provided between the second dielectric plate 2 and the third dielectric plate 3.
A T-shaped feeder line 13 and a tuning branch 14 are arranged on the first copper-clad layer 4, a coupling aperture 12 is arranged on the grounding plate 5, and a rectangular patch 11 is arranged on the second copper-clad layer 6; a 6 x 6 pixel array 10 is provided on the third copper-clad layer 7. The first dielectric plate 1 is provided with a feed port 15.
The dielectric constants of the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 in the design are all 2.55, and the loss tangent is 0.0029. The thickness of the first dielectric plate 1, the second dielectric plate 2 and the third dielectric plate 3 is 1.5mm; the thickness of the first air layer was 10mm, and the thickness of the second air layer was 9mm.
Referring to fig. 2, a dielectric structure diagram of a broadband patch antenna of a pixel array according to the present invention is shown, and the entire antenna is composed of three dielectric plates and two air layers. The primary function of the first air layer 8 is to separate the resonant modes caused by the rectangular patch 11 and the resonant modes caused by the coupling aperture 12 by a little larger frequency interval in order to reduce the coupling of the rectangular patch 11 to the coupling aperture 12. The second air layer 9 is mainly for improving gain and bandwidth.
Referring to fig. 3, which shows a model diagram of a pixel array of a wideband patch antenna of a pixel array of the present invention, the pixel array 10 is composed of 6×6 square patches; the size of each square patch was 7mm and the gap was 0.7mm. The main purpose of the 6 x6 pixel array 10 is to increase the bandwidth of the patch antenna.
Referring to fig. 4, a rectangular patch of a wideband patch antenna of a pixel array of the present invention is shown. The rectangular patch 11 serves as the main radiation source for the whole antenna unit.
Referring to fig. 5, a feed structure for a broadband patch antenna for a pixel array of the present invention is shown. The feeder structure is a T-shaped feeder 13, and a resonance mode is introduced to expand the bandwidth by adding a tuning branch 14. The T-shaped feed line 13 feeds the rectangular patch 11 through the coupling aperture 12.
The feed port 15 serves as both an input port and an output port of the broadband patch antenna and is connected to the T-shaped feed line 13, and is fed through the feed port 15, signals are coupled from the T-shaped feed line 13 through the coupling aperture 12 to the rectangular patch 11 and the pixel array 10, and finally the signals are radiated through the rectangular patch and the pixel array.
Referring to fig. 6, a diagram of the return loss S11 simulation result of a wideband patch antenna of a pixel array according to the present invention is shown. From the simulation results, the frequency range of the antenna with the return loss smaller than-10 dB exceeds the frequency range of 2GHz-4GHz, and the relative bandwidth exceeds 67%.
Referring to fig. 7, a graph of gain results for a wideband patch antenna for a pixel array of the present invention is shown. As can be seen from the simulation result graph, the gain is flat and kept at about 9dB in the frequency range of 2GHz-4 GHz.
Referring to fig. 8 (a), 8 (b), 8 (c), 8 (d) and 8 (e), simulation patterns of five frequency points of a broadband patch antenna of a pixel array according to the present invention at 2GHz, 2.5GHz, 3GHz, 3.5GHz and 4GHz are shown, respectively. From the simulation results, the antenna of the invention can meet the required characteristics in the pattern of 2GHz-4 GHz.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (6)
1. The broadband patch antenna of the pixel array is characterized by comprising a first dielectric plate (1), a second dielectric plate (2) and a third dielectric plate (3) which are sequentially arranged from bottom to top, wherein a first air layer (8) is arranged between the first dielectric plate (1) and the second dielectric plate (2), a second air layer (9) is arranged between the second dielectric plate (2) and the third dielectric plate (3), a first copper-clad layer (4) is arranged on the lower surface of the first dielectric plate (1), a grounding plate (5) is arranged on the upper surface of the first dielectric plate (1), a second copper-clad layer (6) is arranged on the upper surface of the second dielectric plate (2), and a third copper-clad layer (7) is arranged on the upper surface of the third dielectric plate (3);
The first copper-clad layer (4) is provided with a T-shaped feeder line (13) and a tuning branch (14) connected with the T-shaped feeder line (13), the grounding plate (5) is provided with a coupling aperture (12), the second copper-clad layer (6) is provided with a rectangular patch (11), and the third copper-clad layer (7) is provided with a pixel array (10);
wherein the first air layer (8) reduces the coupling between the rectangular patch (11) and the coupling aperture (12), and the frequency interval between the resonance mode caused by the rectangular patch (11) and the resonance mode caused by the coupling aperture (12) is pulled apart, and the second air layer (9) improves the gain and bandwidth of the broadband patch antenna;
the tuning branch (14) is used for introducing a resonance mode to expand bandwidth;
the pixel array (10) consists of 6 multiplied by 6 square patches, wherein the size of each square patch is 7mm, and the gap is 0.7mm;
the first dielectric plate (1) is provided with a feed port (15), the feed port (15) is connected with a T-shaped feeder line (13), signals are fed through the feed port (15), signals are fed from the T-shaped feeder line (13) to the rectangular patch (11) and the pixel array (10) in a coupling mode through the coupling aperture (12), and finally the signals are radiated out through the rectangular patch (11) and the pixel array (10).
2. A broadband patch antenna for a pixel array according to claim 1, wherein said feed port (15) serves as both an input port and an output port of the broadband patch antenna.
3. A broadband patch antenna according to claim 1, wherein said pixel array (10) is adapted to increase the bandwidth of the broadband patch antenna.
4. A broadband patch antenna for a pixel array according to claim 1, wherein said rectangular patch (11) is used for the radiation source of the entire broadband patch antenna.
5. A broadband patch antenna for a pixel array according to any one of claims 1 to 4, wherein the dielectric constants of said first dielectric plate (1), said second dielectric plate (2) and said third dielectric plate (3) are 2.55 and the loss tangent is 0.0029, and the thicknesses of said first dielectric plate (1), said second dielectric plate (2) and said third dielectric plate (3) are 1.5 mm.
6. A broadband patch antenna for a pixel array according to any one of claims 1 to 4, wherein said first air layer (8) has a thickness of 10mm and said second air layer (9) has a thickness of 9mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811493338.XA CN109524779B (en) | 2018-12-07 | 2018-12-07 | Broadband patch antenna of pixel array |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811493338.XA CN109524779B (en) | 2018-12-07 | 2018-12-07 | Broadband patch antenna of pixel array |
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| CN109524779A CN109524779A (en) | 2019-03-26 |
| CN109524779B true CN109524779B (en) | 2024-06-11 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11316281B2 (en) * | 2019-07-03 | 2022-04-26 | Samsung Electro-Mechanics Co., Ltd. | Antenna apparatus |
| CN110600858A (en) * | 2019-08-30 | 2019-12-20 | 维沃移动通信有限公司 | Antenna unit and terminal equipment |
| CN110635244B (en) * | 2019-09-06 | 2022-07-15 | 维沃移动通信有限公司 | Antenna and electronic equipment |
| CN110957576B (en) * | 2019-12-25 | 2021-01-26 | 电子科技大学 | Ultra-low profile microstrip laminated dual-polarized base station antenna and array |
| CN113097745B (en) * | 2021-04-08 | 2022-11-29 | 电子科技大学 | Wide-beam parasitic pixel layer antenna for one-dimensional large-angle scanning |
| CN114256616A (en) * | 2021-12-30 | 2022-03-29 | 中国科学院微电子研究所 | Antenna unit and antenna array |
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| CN104319461A (en) * | 2014-10-01 | 2015-01-28 | 广东工业大学 | Artificial electromagnetic medium based broadband multi-mode satellite navigation antenna |
| CN209515995U (en) * | 2018-12-07 | 2019-10-18 | 华南理工大学 | A kind of wideband patch antenna of pixel array |
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2018
- 2018-12-07 CN CN201811493338.XA patent/CN109524779B/en active Active
Patent Citations (2)
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|---|---|---|---|---|
| CN104319461A (en) * | 2014-10-01 | 2015-01-28 | 广东工业大学 | Artificial electromagnetic medium based broadband multi-mode satellite navigation antenna |
| CN209515995U (en) * | 2018-12-07 | 2019-10-18 | 华南理工大学 | A kind of wideband patch antenna of pixel array |
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| Title |
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| BROADBAND T AND SHUNT-STUB-SHAPED MICROSTRIP-FED SLOT ANTENNA BACKED BY A GROUND PLANE;Yong-Woong Jang等;《MICROWAVE AND OPTICAL TECHNOLOGY LETTERS》;第32卷(第4期);第278-280页 * |
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