CN114639952A - Omnidirectional circularly polarized antenna - Google Patents
Omnidirectional circularly polarized antenna Download PDFInfo
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- CN114639952A CN114639952A CN202210531723.9A CN202210531723A CN114639952A CN 114639952 A CN114639952 A CN 114639952A CN 202210531723 A CN202210531723 A CN 202210531723A CN 114639952 A CN114639952 A CN 114639952A
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- radiation
- shaped metal
- medium unit
- metal surfaces
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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
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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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
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/526—Electromagnetic shields
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The embodiment of the invention discloses an omnidirectional circularly polarized antenna which comprises a radiation medium unit A, a radiation medium unit B, a connecting column and a feed part, wherein the radiation medium unit A consists of a PCB (printed Circuit Board) A and a radiation surface A, the radiation surface A is formed by N L-shaped metal surfaces which are distributed in a circle at equal angles, and the N L-shaped metal surfaces are connected by a circular metal surface in the middle; the radiation medium unit B consists of a PCB board B and a radiation surface B, the radiation surface B is distributed in a circle with equal angle from N reverse L-shaped metal surfaces, and the N reverse L-shaped metal surfaces are connected by a circular ring-shaped metal surface in the middle; the connecting column comprises N metal columns which respectively connect the tail end of the L-shaped metal surface with the N reverse L-shaped tail ends one by one; the feeding portion is composed of a core wire connected to the radiation dielectric unit A and a shield layer connected to the radiation dielectric unit B. The invention adopts a plurality of pairs of radiation surfaces, each radiation surface covers one area, and the radiation surfaces are uniformly distributed according to equal angles and a circle, so that the omnidirectional coverage can be realized.
Description
Technical Field
The invention relates to the technical field of satellite mobile communication, in particular to an omnidirectional circularly polarized antenna.
Background
A satellite mobile communication system refers to communication that moves through a mobile satellite and a fixed terminal, a fixed satellite and a mobile terminal, or both. Since the 80's of the 20 th century, many companies in the western world have come to be aware of the worldwide coverage in the future, personal-oriented seamless communication, so-called globalization of personal communication, i.e., the huge demand of 5W { Whoever (any place) \ Whenever (any time) \ whemever (any time) } (in any way) }, and the successive development of satellite mobile communication systems with medium and low orbit satellite constellation systems as air transit platforms, the development of services such as satellite mobile telephony, satellite live broadcast/satellite digital audio broadcasting, internet access, and high-speed, broadband multimedia access.
The main reasons that have been built and put into use in the last 90 s of the century are: iridium (Iridium) system, Globalstar system, orbbonn system, messenger system (russia), etc., and all of the above communication systems employ circularly polarized signals.
Due to the portability of the mobile terminal, the top of the mobile terminal cannot be aligned to the satellite in real time, so that the circularly polarized signal of the mobile terminal equipment is required to have omni-directionality.
The currently mainstream satellite communication antenna has the following defects and shortcomings: the antenna radiation directivity is too strong to be adapted to each use scene of the mobile terminal.
Disclosure of Invention
The technical problem to be solved by the embodiments of the present invention is to provide an omnidirectional circularly polarized antenna, so that circular polarization is omnidirectional and covers all directions.
In order to solve the technical problem, an embodiment of the invention provides an omnidirectional circularly polarized antenna, which comprises a radiation medium unit A, a radiation medium unit B, a connecting column and a feeding part, wherein the radiation medium unit A comprises a PCB (printed circuit board) A and a radiation surface A, the radiation surface A is positioned at the geometric center of the PCB A, the radiation surface A comprises N L-shaped metal surfaces and a circular metal surface, the N L-shaped metal surfaces are distributed at equal angles in a circle, and the circular metal surface is positioned in the middle and connected with the N L-shaped metal surfaces; the radiation medium unit B consists of a PCB (printed Circuit Board) B and a radiation surface B, the radiation surface B is positioned at the geometric center of the PCB B, the radiation surface B consists of N reverse L-shaped metal surfaces and a circular metal surface, the N reverse L-shaped metal surfaces are distributed in a circle at equal angles, and the circular metal surface is positioned in the middle and is connected with the N reverse L-shaped metal surfaces; the connecting column comprises N metal columns, and the N metal columns are used for respectively connecting the tail ends of N L-shaped metal surfaces of the radiation medium unit A and the tail ends of N reverse L-shaped metal surfaces of the radiation medium unit B one by one; the power feeding part is composed of a core wire and a shielding layer, wherein the core wire is connected with the radiation medium unit A, and the shielding layer is connected with the radiation medium unit B; n is a positive integer and is not less than 3.
Further, N = 6.
The invention has the beneficial effects that: the invention adopts a plurality of pairs of radiation surfaces, each radiation surface covers one area, and the radiation surfaces are uniformly distributed according to equal angles and a circle, so that the omnidirectional coverage can be realized.
Drawings
Fig. 1 is a structural diagram of an omnidirectional circularly polarized antenna according to an embodiment of the present invention.
Fig. 2 is an exploded view of an omnidirectional circularly polarized antenna according to an embodiment of the present invention.
Fig. 3 is a front view of a radiation medium unit a of the embodiment of the present invention.
Fig. 4 is a front view of a radiation medium unit B of the embodiment of the present invention.
Fig. 5 is a perspective structural view of an omnidirectional circularly polarized antenna according to an embodiment of the present invention.
Fig. 6 is a return loss diagram of an omnidirectional circularly polarized antenna according to an embodiment of the present invention.
Fig. 7 is a Phi0 ° gain diagram for an omnidirectional circularly polarized antenna according to an embodiment of the present invention.
Fig. 8 is a Phi10 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 9 is a Phi20 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 10 is a Phi30 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 11 is a Phi40 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 12 is a Phi50 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 13 is a Phi60 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 14 is a Phi70 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 15 is a Phi80 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Figure 16 is a Phi90 ° gain plot for an omni-directional circularly polarized antenna of an embodiment of the present invention.
Description of the reference numerals
PCB A1, radiation surface A2, PCB B3, radiation surface B4, metal column 5, core wire 6 and shielding layer 7.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other without conflict, and the present invention is further described in detail with reference to the drawings and specific embodiments.
If directional indications (such as up, down, left, right, front, and rear … …) are provided in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the movement, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.
Referring to fig. 1 to 5, an omnidirectional circularly polarized antenna according to an embodiment of the present invention includes a radiation medium unit a, a radiation medium unit B, a connection column, and a feeding portion.
The radiation medium unit A is composed of a PCB board A and a radiation surface A, the radiation surface A is located at the geometric center of the PCB board A, the radiation surface A is distributed in a circle with equal angle from N L-shaped metal surfaces, and the N L-shaped metal surfaces are connected through a circular metal surface in the middle. The PCB A is made of FR4 board, and the radiating surface A is copper-plated by adopting a PCB etching process and is positioned at the geometric center of the PCB A.
The radiation medium unit B consists of a PCB (printed Circuit Board) B and a radiation surface B, the radiation surface B is positioned at the geometric center of the PCB B, the radiation surface B is distributed by N reverse L-shaped metal surfaces in a circle with equal angle, and the N reverse L-shaped metal surfaces are connected by a circular ring-shaped metal surface in the middle. The PCB B is made of FR4 board, and the radiating surface B is copper-paved at the geometric center of the PCB B by adopting a PCB etching process.
The radiation medium unit a and the radiation medium unit B of the present invention have an up-down mirror image structure, both participate in radiation, and the present invention has better consistency in up-down direction and axial ratio, please refer to fig. 6 to 16.
The connecting column comprises N metal columns, and the N metal columns are used for respectively connecting the tail ends of N L-shaped metal surfaces of the radiation medium unit A and the tail ends of N reverse L-shaped metal surfaces of the radiation medium unit B one by one.
The feeding portion is composed of a core wire connected to the radiation dielectric unit A and a shield layer connected to the radiation dielectric unit B.
N is a positive integer and is not less than 3. N is preferably 6.
As an embodiment, the radiation medium units a and B may be reversed up and down, and the circular polarization handedness of the antenna may be changed, for example, right-hand circular polarization in the above embodiment, and left-hand circular polarization if the radiation medium units a and B are reversed. Namely, the core of the feeding portion is connected to the radiation dielectric element B, and the shield layer is connected to the radiation dielectric element a.
The working principle of the invention is as follows: the L-shaped metal surface in the radiation medium unit A, the connecting column and the reverse L-shaped metal surface in the radiation medium unit B form 1/2 wavelength with required frequency for radiation; and multiple pairs of L-shaped metal surfaces can enable the circular polarization to be omnidirectional and cover all directions.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. An omnidirectional circularly polarized antenna is characterized by comprising a radiation medium unit A, a radiation medium unit B, a connecting column and a feed part, wherein the radiation medium unit A consists of a PCB (printed Circuit Board) A and a radiation surface A, the radiation surface A is positioned at the geometric center of the PCB A, the radiation surface A consists of N L-shaped metal surfaces and a circular metal surface, the N L-shaped metal surfaces are distributed at equal angles and in a circle, and the circular metal surface is positioned in the middle and is connected with the N L-shaped metal surfaces; the radiation medium unit B consists of a PCB (printed Circuit Board) B and a radiation surface B, the radiation surface B is positioned at the geometric center of the PCB B, the radiation surface B consists of N reverse L-shaped metal surfaces and a circular metal surface, the N reverse L-shaped metal surfaces are distributed in a circle at equal angles, and the circular metal surface is positioned in the middle and is connected with the N reverse L-shaped metal surfaces; the connecting column comprises N metal columns, and the N metal columns are used for respectively connecting the tail ends of N L-shaped metal surfaces of the radiation medium unit A and the tail ends of N reverse L-shaped metal surfaces of the radiation medium unit B one by one; the power feeding part is composed of a core wire and a shielding layer, wherein the core wire is connected with the radiation medium unit A, and the shielding layer is connected with the radiation medium unit B; n is a positive integer and is not less than 3.
2. The omni-directional circularly polarized antenna of claim 1, wherein N = 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531723.9A CN114639952A (en) | 2022-05-17 | 2022-05-17 | Omnidirectional circularly polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210531723.9A CN114639952A (en) | 2022-05-17 | 2022-05-17 | Omnidirectional circularly polarized antenna |
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| Publication Number | Publication Date |
|---|---|
| CN114639952A true CN114639952A (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210531723.9A Pending CN114639952A (en) | 2022-05-17 | 2022-05-17 | Omnidirectional circularly polarized antenna |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490151A (en) * | 2013-08-30 | 2014-01-01 | 大连海事大学 | L-waveband broadband circular polarization micro-strip antenna |
| CN105206911A (en) * | 2015-08-24 | 2015-12-30 | 桂林电子科技大学 | Zeroth-order resonator and low-profile zeroth-order resonator omnidirectional circularly polarized antenna |
| CN107154529A (en) * | 2017-04-20 | 2017-09-12 | 西安电子科技大学 | A kind of microminiature low section omnidirectional circular-polarized antenna |
| CN207834561U (en) * | 2018-01-02 | 2018-09-07 | 华南理工大学 | A kind of broadbands 5G trap circular polarized antenna |
| US20200162947A1 (en) * | 2018-11-20 | 2020-05-21 | Iwave Technologies Co., Ltd. | Antenna structure, antenna device and wireless localization method |
-
2022
- 2022-05-17 CN CN202210531723.9A patent/CN114639952A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103490151A (en) * | 2013-08-30 | 2014-01-01 | 大连海事大学 | L-waveband broadband circular polarization micro-strip antenna |
| CN105206911A (en) * | 2015-08-24 | 2015-12-30 | 桂林电子科技大学 | Zeroth-order resonator and low-profile zeroth-order resonator omnidirectional circularly polarized antenna |
| CN107154529A (en) * | 2017-04-20 | 2017-09-12 | 西安电子科技大学 | A kind of microminiature low section omnidirectional circular-polarized antenna |
| CN207834561U (en) * | 2018-01-02 | 2018-09-07 | 华南理工大学 | A kind of broadbands 5G trap circular polarized antenna |
| US20200162947A1 (en) * | 2018-11-20 | 2020-05-21 | Iwave Technologies Co., Ltd. | Antenna structure, antenna device and wireless localization method |
| TW202021194A (en) * | 2018-11-20 | 2020-06-01 | 慧波科技有限公司 | Antenna structure, antenna device and wireless localization method |
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Application publication date: 20220617 |