CN209963241U - Omnidirectional circularly polarized antenna - Google Patents
Omnidirectional circularly polarized antenna Download PDFInfo
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- CN209963241U CN209963241U CN201921044861.4U CN201921044861U CN209963241U CN 209963241 U CN209963241 U CN 209963241U CN 201921044861 U CN201921044861 U CN 201921044861U CN 209963241 U CN209963241 U CN 209963241U
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Abstract
The utility model provides an omnidirectional circular polarized antenna structure, include: an antenna body; the antenna body includes: the radiation structure comprises a first circular reflection surface, a second circular reflection surface, a support column B, a support column C and a circular base. The upper surface of the round base is provided with a second reflecting surface, the center of the second reflecting surface is fixedly provided with a vertical supporting column B, the middle part of the supporting column B penetrates through the second reflecting surface, and the top end of the supporting column B8 penetrates through the radiation structure. The first reflective surface, the second reflective surface and the radiating structure are concentric. The first reflecting surface and the second reflecting surface are supported by six supporting columns A, and the radiation structures are supported by six supporting columns C. The utility model has the advantages that: the low elevation gain of the antenna is effectively improved; the out-of-roundness of the antenna gain is effectively improved; the structure is simple, the engineering realization is easy, the cost is low, and the large-area market popularization and use are easy.
Description
Technical Field
The utility model relates to an in antenna technical field, in particular to circular polarized antenna of qxcomm technology.
Background
An antenna is an indispensable device in a communication and navigation system for radiating and receiving radio waves. The microstrip antenna is a widely used antenna form, and its structure is that a metal thin layer is attached to one side of a thin medium substrate as a grounding plate, and on the other side, a metal patch with a certain shape is made by some PCB processing method, and the patch is fed by using microstrip line or coaxial probe to form the antenna. The structure is simple, the processing is easy, the volume is small and the weight is light.
With the continuous development of antennas and radio devices, an omnidirectional circularly polarized microstrip antenna is proposed. The antenna has good beam coverage and can better meet the requirement of low elevation angle communication.
At present, many researches on omnidirectional circularly polarized antennas are carried out at home and abroad, and meanwhile, a plurality of papers, periodicals and other valuable literature materials, conference documents and other valuable literature materials are formed. The adopted design form for realizing the omnidirectional circularly polarized antenna comprises the following steps: the antenna comprises a multi-array element array cylindrical conformal antenna, a ring structure antenna, a single negative zero-order resonant antenna with a mushroom structure, a four-arm spiral antenna based on a T2 mode and the like. However, most of the antenna forms have complex structures, the manufacturing cost is high during engineering implementation, the requirement on processing precision is high, and the processing difficulty is high. Therefore, the method is not easy to be applied in practice and popularized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect, provide an qxcomm technology circular polarized antenna. The problems in the prior art can be solved.
An omnidirectional circularly polarized antenna, comprising: an antenna cover 1 and an antenna body 2;
the antenna body 2 includes: a first reflective surface 5 of a radiating structure circular, a second reflective surface 6 of a circular shape, a support post B8, a support post C9, and a circular base 10.
The upper surface of the circular base 10 is provided with a second reflecting surface 6, the center of the second reflecting surface 6 is fixed with a vertical supporting column B8, the middle part of the supporting column B8 penetrates through the second reflecting surface 6, and the top end of the supporting column B8 penetrates through the radiation structure. The first 5, second 6 reflective surfaces and the radiating structure are concentric. The first reflecting surface 5 and the second reflecting surface 6 are supported by six supporting columns A7, and the radiating structures are supported by six supporting columns C9.
The radiation structure includes: two layers of dielectric plates 3, microstrip lines 4 and support pillars A7;
the dielectric slabs 3 are circular, the two dielectric slabs 3 are connected through a support column A7, and the two dielectric slabs 3 are concentric.
The surface of the dielectric plate 3 is printed with a microstrip line 4, and the microstrip line 4 is connected by a circular microstrip line printed on the dielectric plate 3 and six L-shaped microstrip lines evenly distributed on the edge of the circular microstrip line. The microstrip lines of the two layers of dielectric plates 3 distributed in a wheel shape are distributed towards opposite directions.
Six support columns A7 are provided, and the upper and lower ends of each support column A7 are respectively connected to the end points of six groups of L-shaped microstrip lines of the two layers of dielectric plates 3.
The antenna housing 1 can cover the whole antenna body 2, and the edge of the bottom of the antenna housing 1 is matched with the edge of the circular base 10.
Further, the dielectric board 3 is an FR-4 epoxy glass fiber board material.
Furthermore, the three-dimensional grounding structure is divided into two layers, a first reflecting surface 5 positioned below the radiation structure is made of FR-4 epoxy glass fiber board materials with copper coated on two sides, and a second reflecting surface 6 positioned below the radiation structure is made of a metal aluminum plate.
Further, the radome 1 is made of glass fiber reinforced plastic.
Compared with the prior art, the utility model has the advantages of:
1. the low elevation gain of the antenna is effectively improved;
2. the out-of-roundness of the antenna gain is effectively improved;
3. a unique antenna housing is designed for the antenna, so that the environmental adaptability of the antenna is improved; meanwhile, the service life of the antenna is prolonged to a certain extent;
4. the structure is simple, the engineering realization is easy, the cost is low, and the large-area market popularization and use are easy.
Drawings
Fig. 1 is a global view of an omnidirectional circularly polarized antenna structure according to an embodiment of the present invention;
fig. 2 is an antenna part view of an omnidirectional circularly polarized antenna structure according to an embodiment of the present invention;
fig. 3 is a reflection coefficient curve diagram of an omnidirectional circularly polarized antenna according to an embodiment of the present invention;
FIG. 4 is a diagram of an x-z plane radiation pattern corresponding to the frequency of the antenna BD-B1 according to an embodiment of the present invention;
fig. 5 is an x-z plane radiation pattern corresponding to the frequency of the antenna GPS-L1 according to the embodiment of the present invention;
FIG. 6 is a diagram illustrating an x-z plane radiation pattern corresponding to the GLONASS-L1 frequency according to an embodiment of the present invention;
the reference numbers illustrate: 1. an antenna cover; 2. an antenna body; 3. a radiating structure; 4. radiating the metal surface; 5. a first reflective surface; 6. a second reflective surface; 7. a support pillar A; 8. a support column B; 9. a support pillar; 10. a circular base.
Detailed Description
The purpose, technical content, features and effects of the present invention will be more readily understood by the following detailed description of the specific embodiments in conjunction with the accompanying drawings.
In the following detailed description, the preferred embodiments are described as an example only, and not as a limitation on the invention.
As shown in fig. 1 and 2, an omnidirectional circularly polarized antenna includes: an antenna cover 1 and an antenna body 2;
the antenna body 2 includes: a first reflective surface 5 of a radiating structure circular, a second reflective surface 6 of a circular shape, a support post B8, a support post C9, and a circular base 10.
The upper surface of the circular base 10 is provided with a second reflecting surface 6, the center of the second reflecting surface 6 is fixed with a vertical supporting column B8, the middle part of the supporting column B8 penetrates through the second reflecting surface 6, and the top end of the supporting column B8 penetrates through the radiation structure. The first 5, second 6 reflective surfaces and the radiating structure are concentric. The first reflecting surface 5 and the second reflecting surface 6 are supported by six supporting columns A7, and the radiating structures are supported by six supporting columns C9.
The radiation structure includes: two layers of dielectric plates 3, microstrip lines 4 and support pillars A7;
the dielectric slabs 3 are circular, the two dielectric slabs 3 are connected through a support column A7, and the two dielectric slabs 3 are concentric.
The surface of the dielectric plate 3 is printed with a microstrip line 4, and the microstrip line 4 is connected by a circular microstrip line printed on the dielectric plate 3 and six L-shaped microstrip lines evenly distributed on the edge of the circular microstrip line. The microstrip lines of the two layers of dielectric plates 3 distributed in a wheel shape are distributed towards opposite directions.
Six support columns A7 are provided, and the upper and lower ends of each support column A7 are respectively connected to the end points of six groups of L-shaped microstrip lines of the two layers of dielectric plates 3.
The antenna housing 1 can cover the whole antenna body 2, and the edge of the bottom of the antenna housing 1 is matched with the edge of the circular base 10.
Further, the dielectric board 3 is an FR-4 epoxy glass fiber board material.
Furthermore, the three-dimensional grounding structure is divided into two layers, a first reflecting surface 5 positioned below the radiation structure is made of FR-4 epoxy glass fiber board materials with copper coated on two sides, and a second reflecting surface 6 positioned below the radiation structure is made of a metal aluminum plate.
Further, the radome 1 is made of glass fiber reinforced plastic.
As shown in FIG. 3, the frequency coverage of the embodiment of the present invention is BD-B1, GPS-L1 and GLONASS-L1 frequency points. The reflection coefficient curve of the antenna is shown in fig. 4, the reflection coefficient is below-15 dB, and the matching is good.
As shown in fig. 4, it is that the embodiment of the present invention is that right-handed circular polarization radiation pattern of the X-Z plane corresponding to the BD-B1 frequency point is as shown in fig. 5, PHI is 0 °, PHI is 45 °, PHI is 90 °, and the maximum right-handed circular polarization gain is 3.2dB, and the antenna has good circular polarization performance and good out-of-roundness at the BD-B1 frequency point.
As shown in fig. 5, it is that the embodiment of the present invention is that right-handed circular polarization radiation pattern on the X-Z plane corresponding to the frequency point GPS-L1 is as shown in fig. 5, PHI is 0 °, PHI is 45 °, PHI is 90 °, and the maximum right-handed circular polarization gain is 3.2dB, and the antenna has good circular polarization performance and good out-of-roundness at the frequency point GPS-L1.
As shown in fig. 6, it is that the right-handed circular polarization radiation pattern of the X-Z plane corresponding to the frequency point GLONASS-L1 of the embodiment of the present invention is as shown in fig. 5, the maximum right-handed circular polarization gain of PHI 0 °, PHI 45 °, PHI 90 ° is 3.2dB, and the antenna has good circular polarization performance and good out-of-roundness at the frequency point GLONASS-L1.
According to the data of the simulation result, the plurality of sections of conductors which are axially placed through the dipole mode feed excitation are supplemented with the double-layer grounding structure, so that the effects of realizing horizontal omnidirectional circular polarization of the antenna, improving low elevation gain and improving gain out-of-roundness are good, and meanwhile, the wide gain bandwidth is achieved.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner in which the invention is practiced, and it is to be understood that the scope of the invention is not limited to such specifically recited statements and examples. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are within the scope of the invention.
Claims (4)
1. An omni-directional circularly polarized antenna, comprising: an antenna cover (1) and an antenna body (2);
the antenna body (2) includes: the radiation structure comprises a first circular reflection surface (5), a second circular reflection surface (6), a support column B (8), a support column C (9) and a circular base (10);
a second reflecting surface (6) is arranged on the upper surface of the circular base (10), a vertical supporting column B (8) is fixed at the center of the second reflecting surface (6), the middle part of the supporting column B (8) penetrates through the second reflecting surface (6), and the top end of the supporting column B (8) penetrates through the radiation structure; the first reflecting surface (5), the second reflecting surface (6) and the radiation structure are concentric; the first reflecting surface (5) and the second reflecting surface (6) are supported by six supporting columns A (7), and the radiation structures are supported by six supporting columns C (9);
the radiation structure includes: the microstrip line structure comprises two layers of dielectric plates (3), microstrip lines (4) and support columns A (7);
the dielectric plates (3) are circular, the two layers of dielectric plates (3) are connected through a support column A (7), and the two layers of dielectric plates (3) are concentric;
the surface of the dielectric plate (3) is printed with a microstrip line (4), and the microstrip line (4) is connected by a circular microstrip line printed on the dielectric plate (3) and six L-shaped microstrip lines evenly distributed at the edge of the circular microstrip line; the wheel-type distributed microstrip lines of the two layers of dielectric plates (3) are distributed towards opposite directions;
the upper end and the lower end of each supporting column A (7) are respectively connected to the end points of six groups of L-shaped microstrip lines of the two layers of dielectric plates (3);
the antenna housing (1) can cover the whole antenna body (2), and the edge of the bottom of the antenna housing (1) is matched with the edge of the circular base (10).
2. The omni-directional circularly polarized antenna of claim 1, wherein: the medium plate (3) is made of FR-4 epoxy glass fiber plate material.
3. The omni-directional circularly polarized antenna of claim 1, wherein: the three-dimensional grounding structure is divided into two layers, a first reflecting surface (5) positioned below the radiation structure is made of FR-4 epoxy glass fiber board materials with copper coated on two sides, and a second reflecting surface (6) positioned below the radiation structure is made of a metal aluminum plate.
4. The omni-directional circularly polarized antenna of claim 1, wherein: the antenna housing (1) is made of glass fiber reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921044861.4U CN209963241U (en) | 2019-07-05 | 2019-07-05 | Omnidirectional circularly polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921044861.4U CN209963241U (en) | 2019-07-05 | 2019-07-05 | Omnidirectional circularly polarized antenna |
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| Publication Number | Publication Date |
|---|---|
| CN209963241U true CN209963241U (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921044861.4U Active CN209963241U (en) | 2019-07-05 | 2019-07-05 | Omnidirectional circularly polarized antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639963A (en) * | 2022-04-06 | 2022-06-17 | 合肥若森智能科技有限公司 | Multi-band dual-circular-polarization omnidirectional antenna |
-
2019
- 2019-07-05 CN CN201921044861.4U patent/CN209963241U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114639963A (en) * | 2022-04-06 | 2022-06-17 | 合肥若森智能科技有限公司 | Multi-band dual-circular-polarization omnidirectional antenna |
| CN114639963B (en) * | 2022-04-06 | 2024-03-29 | 合肥若森智能科技有限公司 | Multi-band double circular polarization omnidirectional antenna |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Omnidirectional circular polarization antenna Effective date of registration: 20211224 Granted publication date: 20200117 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: CHENGDU BEIDOU ANTENNA ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2021990001200 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230717 Granted publication date: 20200117 Pledgee: The Agricultural Bank of Chengdu branch of Limited by Share Ltd. Chinese Sichuan Pledgor: CHENGDU BEIDOU ANTENNA ENGINEERING TECHNOLOGY Co.,Ltd. Registration number: Y2021990001200 |