CN107359407B - Wide-beam dual-polarization microstrip antenna based on short-circuit wall structure - Google Patents
Wide-beam dual-polarization microstrip antenna based on short-circuit wall structure Download PDFInfo
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- CN107359407B CN107359407B CN201710357798.9A CN201710357798A CN107359407B CN 107359407 B CN107359407 B CN 107359407B CN 201710357798 A CN201710357798 A CN 201710357798A CN 107359407 B CN107359407 B CN 107359407B
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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
Abstract
The invention relates to a wide-beam dual-polarized microstrip antenna which comprises a main radiation patch, a substrate, a ground plane and a coaxial feed conductor needle, wherein the main radiation patch is arranged above the substrate; the first parasitic radiation patch and the second parasitic radiation patch are arranged above the substrate, and a central angle of 90 degrees is formed between the first parasitic radiation patch and the second parasitic radiation patch by taking the main radiation patch as a circle center; the main radiation patch, the first parasitic radiation patch and the second parasitic radiation patch are all provided with a short circuit wall, the short circuit wall comprises at least 8 short circuit pins, one end of each short circuit pin of the short circuit wall is connected with the main radiation patch, the first parasitic radiation patch or the second parasitic radiation patch, and the other end of each short circuit pin of the short circuit wall penetrates through the substrate and then is connected with the ground plane.
Description
Technical Field
The invention relates to the field of wireless energy transmission, in particular to a wide-beam dual-polarized microstrip antenna based on a short-circuit wall structure.
Background
Wireless energy transfer technology (MPT) refers to a process in which energy is transferred from an energy source to an electrical load by wireless transmission, in which electric energy is converted into microwaves, the microwaves are transmitted to a target location in a free space, and then rectified and converted into direct current electric energy to provide direct current power. The MPT can realize long-distance energy transmission, and has been a research point of great interest.
The MPT transceiver antenna is located at the front end of the system and is responsible for receiving or transmitting energy from free space, which is one of the most important components of the MPT system. To meet the performance requirements of the MPT system, the transceiving antenna should have the characteristics of large beam width, high efficiency, small overall size, high gain, and the like. Microstrip antenna has been a big hot spot in the field of MPT technology research because of its characteristics such as small size, easy integration, etc.
However, the conventional microstrip antenna has the disadvantages of narrow beam width, narrow bandwidth, small gain, low radiation efficiency, etc., so that it is limited in many applications. Especially at the receiving end of wireless energy transmission, the antenna is required to receive energy efficiently in a wider direction, and the conventional antenna is more limited in this case.
Disclosure of Invention
The invention provides a wide-beam dual-polarized microstrip antenna based on a short-circuit wall structure, aiming at overcoming the defects of the prior art, and the antenna realizes wider half-power beam width.
In order to realize the purpose, the technical scheme is as follows:
A wide-beam dual-polarized microstrip antenna based on a short-circuit wall structure comprises a main radiation patch, a substrate, a ground plane and a coaxial feed conductor needle, wherein the main radiation patch is arranged above the substrate, the ground plane is arranged on the bottom surface of the substrate, one end of the coaxial feed conductor needle is connected with the main radiation patch, the other end of the coaxial feed conductor needle penetrates through the substrate and then is connected with the ground plane, the dual-polarized microstrip antenna further comprises a first parasitic radiation patch and a second parasitic radiation patch, the first parasitic radiation patch and the second parasitic radiation patch are arranged above the substrate, and a 90-degree central angle is formed between the first parasitic radiation patch and the second parasitic radiation patch by taking the main radiation patch as a circle center; the main radiation patch, the first parasitic radiation patch and the second parasitic radiation patch are all provided with short circuit walls, each short circuit wall comprises at least 8 short circuit pins, one end of each short circuit pin of each short circuit wall is connected with the main radiation patch, the first parasitic radiation patch or the second parasitic radiation patch, and the other end of each short circuit pin of each short circuit wall penetrates through the substrate and then is connected with the ground plane.
In the scheme, the main radiating patch is used as a main radiating unit, microwave energy is excited by the coaxial feed conductor needle to the main radiating unit, and then the microwave energy is coupled into the second parasitic radiating patch and the first parasitic radiating patch, so that the microwave energy is effectively radiated into free space. The microstrip antenna is connected with the ground plane by using the short-circuit wall, so that the current distribution on the parasitic radiation patch is enhanced, and meanwhile, the ground plane is also used as a radiator, so that the beam width of the antenna can be widened, and the miniaturization of the antenna is realized. In addition, the invention provides a symmetrical structure of the second parasitic radiation patch and the first parasitic radiation patch of the antenna, so that the antenna can realize symmetrical current distribution in two directions, and therefore, two vertical planes in the vertical direction have similar wide-beam radiation, and the wide-beam dual-polarized microstrip antenna is realized.
Compared with the prior art, the invention has the beneficial effects that:
1) The wide-beam dual-polarized microstrip antenna provided by the invention has the advantages that the half-power beam width is large, the directivity is good, and the symmetrical radiation can be realized on two vertical planes in the vertical direction; the WPT antenna can receive more energy in a wider range and is suitable for being used as a receiving antenna of the WPT system.
2) The wide-beam dual-polarized microstrip antenna provided by the invention can effectively radiate energy and has high working efficiency.
3) According to the wide-beam dual-polarized microstrip antenna provided by the invention, the parasitic radiation patch is connected with the ground plane through the short circuit wall, so that the size of the radiator is increased, and the beam width is increased; compared with the antenna without the short-circuit wall, the half-power beam width is improved by about 77 percent.
4) The wide-beam dual-polarized microstrip antenna provided by the invention utilizes the structure of the short-circuit wall to connect the parasitic radiation patch with the ground, thereby being beneficial to forming a more compact design and realizing the miniaturization of the antenna.
Drawings
Fig. 1 is a schematic transverse cross-sectional view of a microstrip antenna.
Fig. 2 is a longitudinal cross-sectional view of the microstrip antenna.
Fig. 3 is a graph of the optimal reflection coefficient of the microstrip antenna in different frequency bands.
Fig. 4 is a directional gain curve diagram of the microstrip antenna on the E-plane and the H-plane.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
The invention is further illustrated below with reference to the figures and examples.
Example 1
As shown in fig. 1 and 2, a wide-beam dual-polarized microstrip antenna based on a short-circuit wall 4 structure includes a main radiation patch 1, a substrate 3, a ground plane 7, a coaxial feed conductor pin 5, a first parasitic radiation patch 2, and a second parasitic radiation patch 8, where the main radiation patch 1 is disposed above the substrate 3, the ground plane 7 is disposed on the bottom surface of the substrate 3, one end of the coaxial feed conductor pin 5 is connected to the main radiation patch 1, and the other end of the coaxial feed conductor pin 5 passes through the substrate 3 and then is connected to the ground plane 7; the first parasitic radiation patch 2 and the second parasitic radiation patch 8 are arranged above the substrate 3, and a central angle of 90 degrees is formed between the first parasitic radiation patch 2 and the second parasitic radiation patch 8 by taking the main radiation patch 1 as a circle center; the main radiation patch 1, the first parasitic radiation patch 2 and the second parasitic radiation patch 8 are all provided with a short circuit wall 4, the short circuit wall 4 comprises at least 8 short circuit pins, one end of the short circuit pin of the short circuit wall 4 is connected with the main radiation patch 1, the first parasitic radiation patch 2 or the second parasitic radiation patch 8, and the other end of the short circuit pin of the short circuit wall 4 penetrates through the substrate 3 and then is connected with the ground plane 7.
In the above scheme, the main radiating patch 1 is used as a main radiating element, microwave energy is excited by the coaxial feed conductor needle 5 to the main radiating element, and then the main radiating element is coupled to the second parasitic radiating patch 8, and the microwave energy is effectively radiated into free space in the first parasitic radiating patch 2. The microstrip antenna is connected with the ground plane 7 by the short-circuit wall 4, current distribution on the radiation patch is enhanced, and meanwhile, the ground plane 7 is also used as a radiator, so that the beam width of the antenna can be widened, and the miniaturization of the antenna is realized. In addition, the symmetrical structure of the second parasitic radiation patch 8 and the first parasitic radiation patch 2 of the antenna enables the antenna to realize symmetrical current distribution in two directions, so that similar wide-beam radiation exists on two vertical planes in the vertical direction, and the wide-beam dual-polarized microstrip antenna is realized.
Wherein a set of short-circuit walls 4 are respectively arranged on the first parasitic radiation patch 2 and the second parasitic radiation patch 8, and two sets of short-circuit walls 4 are arranged on the main radiation patch 1. Each group of short circuit walls 4 comprises 8-20 short circuit needles, at least 8 short circuit needles arranged on the main radiation patch 1, the first parasitic radiation patch 2 or the second parasitic radiation patch 8 are arranged on the same straight line, and a space is reserved between every two adjacent short circuit needles arranged on the same straight line.
in a specific implementation process, as shown in fig. 1, a transverse cross section of the main radiation patch 1 is square, transverse cross sections of the first parasitic radiation patch 2 and the second parasitic radiation patch 8 are rectangular, the first parasitic radiation patch 2 and the second parasitic radiation patch 8 are respectively disposed on one side of two adjacent sides of the main radiation patch 1, and a space is left between the first parasitic radiation patch 2 and the main radiation patch 1 and between the second parasitic radiation patch 8 and the main radiation patch 1, wherein a size of the main radiation patch 1 ranges from 10mm to 14mm, a size of the first parasitic radiation patch 2 and a size of the second parasitic radiation patch 8 range from 10mm to 14mm 10mm, a size of the substrate 3 ranges from 30mm to 30mm, a thickness of the substrate 3 is 0.762mm, a dielectric constant r ∈ 2.55 of the substrate 3, and a dielectric loss tangent tan δ ═ 0.0014.
In a specific implementation, the shorting pin is made of a polytetrafluoroethylene material.
In a specific implementation process, the substrate 3 comprises a dielectric layer and a copper-clad layer, the bottom surface of the dielectric layer is attached to the top surface of the copper-clad layer, and the copper-clad layer is used as a ground plane 7.
In a specific implementation process, the microstrip antenna further includes an SMA head 6 with coaxial feed, and a probe of the SMA head 6 with coaxial feed is connected with the ground plane 7. Microwave energy is input by the coaxial feed SMA head 6, excites the main radiating element via the conductor needle, and then couples into the parasitic radiating patch, effectively radiating the microwave energy into free space.
Example 2
In this example, a specific experiment was performed on the microstrip antenna provided in example 1, and the experimental results are shown in fig. 3 and 4.
As shown in fig. 3, the microstrip antenna provided in example 1 has an optimum reflection coefficient s 11-24.83 dB at the resonant frequency of 5.8 GHz.
As shown in fig. 4, the microstrip antenna provided in embodiment 1 has half-power beam widths of HPBW of 128 ° and HPBW of 134 ° respectively on a plane xoz and a yoz plane perpendicular to each other in the vertical direction at a resonance frequency of 5.8 GHz.
Experiments prove that the microstrip antenna provided by the invention has the advantages of large beam width, good directivity, small size and high radiation efficiency when in use, and is suitable for various wireless communication application fields.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (8)
1. The utility model provides a wide wave beam dual polarization microstrip antenna based on short-circuit wall structure, includes main radiation paster, base plate, ground plane and coaxial feed conductor needle, and wherein main radiation paster sets up in the top of base plate, and the ground plane sets up the bottom surface at the base plate, and the one end and the main radiation paster of coaxial feed conductor needle are connected, and the other end of coaxial feed conductor needle passes behind the base plate and is connected its characterized in that with the ground plane: the dual-polarized microstrip antenna also comprises a first parasitic radiation patch and a second parasitic radiation patch, wherein the first parasitic radiation patch and the second parasitic radiation patch are arranged above the substrate, and a central angle of 90 degrees is formed between the first parasitic radiation patch and the second parasitic radiation patch by taking the main radiation patch as a circle center; the main radiation patch, the first parasitic radiation patch and the second parasitic radiation patch are all provided with short circuit walls, each short circuit wall comprises at least 8 short circuit pins, one end of each short circuit pin of each short circuit wall is connected with the main radiation patch, the first parasitic radiation patch or the second parasitic radiation patch, and the other end of each short circuit pin of each short circuit wall penetrates through the substrate and then is connected with the ground plane.
2. the wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure according to claim 1, wherein: the at least 8 short circuit pins arranged on the main radiation patch, the first parasitic radiation patch or the second parasitic radiation patch are arranged on the same straight line, and a space is reserved between every two adjacent short circuit pins arranged on the same straight line.
3. The wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure according to claim 2, wherein: the number of the short circuit pins included in the short circuit wall is 8-20.
4. The wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure according to claim 1, wherein: the main radiating patch, the first parasitic radiating patch and the second parasitic radiating patch are arranged above the substrate in parallel, and the main radiating patch, the first parasitic radiating patch and the second parasitic radiating patch are arranged on the substrate at the same height.
5. The wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure according to claim 4, wherein: the transverse section of the main radiation patch is square, the transverse sections of the first parasitic radiation patch and the second parasitic radiation patch are rectangular, the first parasitic radiation patch and the second parasitic radiation patch are respectively arranged on one side of two adjacent edges of the main radiation patch, and spaces are reserved between the first parasitic radiation patch and the main radiation patch and between the second parasitic radiation patch and the main radiation patch.
6. The wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure according to claim 5, wherein: the microstrip antenna also comprises an SMA head with coaxial feed, and a probe of the SMA head with coaxial feed is connected with the ground plane.
7. The short-circuit wall structure-based wide-beam dual-polarized microstrip antenna according to any one of claims 1 to 6, wherein: the substrate comprises a dielectric layer and a copper-clad layer, the bottom surface of the dielectric layer is attached to the top surface of the copper-clad layer, and the copper-clad layer is used as a ground plane.
8. The wide-beam dual-polarized microstrip antenna based on the short-circuit wall structure of claim 7, wherein: the size of the main radiating patch ranges from 10mm x 10mm to 14mm x 14mm, the size of the first parasitic radiating patch and the size of the second parasitic radiating patch ranges from 10mm x 8mm to 14mm x 10mm, and the size of the substrate ranges from 30mm x 30 mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710357798.9A CN107359407B (en) | 2017-05-19 | 2017-05-19 | Wide-beam dual-polarization microstrip antenna based on short-circuit wall structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710357798.9A CN107359407B (en) | 2017-05-19 | 2017-05-19 | Wide-beam dual-polarization microstrip antenna based on short-circuit wall structure |
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| CN107359407A CN107359407A (en) | 2017-11-17 |
| CN107359407B true CN107359407B (en) | 2019-12-10 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109687125B (en) * | 2018-12-11 | 2020-10-16 | 西安电子科技大学 | Ultra-low profile dual-frequency wide-beam microstrip antenna based on multi-mode fusion |
| CN112909543A (en) * | 2021-02-08 | 2021-06-04 | 歌尔科技有限公司 | Antenna and wireless device |
| CN113659344A (en) * | 2021-07-13 | 2021-11-16 | 荣耀终端有限公司 | Parasitic coupling-based patch antenna and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682578A (en) * | 2012-09-10 | 2014-03-26 | 联想(北京)有限公司 | Antenna device and antenna forming method |
| CN103887591A (en) * | 2012-12-21 | 2014-06-25 | 宏碁股份有限公司 | Mobile device and control method thereof |
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2017
- 2017-05-19 CN CN201710357798.9A patent/CN107359407B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682578A (en) * | 2012-09-10 | 2014-03-26 | 联想(北京)有限公司 | Antenna device and antenna forming method |
| CN103887591A (en) * | 2012-12-21 | 2014-06-25 | 宏碁股份有限公司 | Mobile device and control method thereof |
Non-Patent Citations (2)
| Title |
|---|
| Development and Analysis of a Folded Shorted-Patch Antenna With Reduced Size;RongLin Li等;《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》;20040228;第52卷(第2期);第555-562页 * |
| The Effect of Shorting Pin Locations on the Performance of a Pattern Reconfigurable Yagi-UdaPatch Antenna;T.Sabapathy等;《2014 2th International conference on electronic design(ICED)》;20140821;第533-536页 * |
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