CN109616775A - Circular polarized antenna - Google Patents
Circular polarized antenna Download PDFInfo
- Publication number
- CN109616775A CN109616775A CN201811344523.2A CN201811344523A CN109616775A CN 109616775 A CN109616775 A CN 109616775A CN 201811344523 A CN201811344523 A CN 201811344523A CN 109616775 A CN109616775 A CN 109616775A
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- China
- Prior art keywords
- metal layer
- sheet metal
- radiation
- radiation zone
- feeder line
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- 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
-
- 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
-
- 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
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Waveguide Aerials (AREA)
Abstract
The present invention relates to a kind of circular polarized antenna, including feeder pillar and successively spaced reflective metal layer, ground metal layer and radiation metal layer；Ground metal layer includes the first sheet metal and the second sheet metal；The inner edge of first sheet metal and the second sheet metal outer rim are for cooperatively forming TE11 mould and TE21 mould；The radiation metal layer includes the first radiation zone, the second radiation zone, the first feeder line and the second feeder line, and one end of first radiation zone is electrically connected with one end of the second radiation zone for coupling with the first sheet metal and the second sheet metal and to form perturbation；In use, the outer rim of the inner edge of the first sheet metal and the second sheet metal cooperatively forms the biggish TE11 mould of difference on the frequency and TE21 mould.In the case where the first radiation zone, the second radiation zone, the first sheet metal and the second sheet metal couple the perturbation to be formed, the difference on the frequency of TE11 mould and TE21 mould reduces, and then has widened the circular polarisation bandwidth of TE11 mould and TE21 mould.
Description
Technical field
The present invention relates to antenna technical fields, more particularly to a kind of circular polarized antenna.
Background technique
Circularly polarization microstrip patch antenna is very popular in numerous applications.Such as satellite communication system, global positioning system
(GPS) and radio frequency identification (RFID).They have the advantages that several, including shape is low, light-weight and at low cost.However, entelechy
The performance for changing micro-strip paster antenna is limited in bandwidth.Currently, with the fast development of communication, there is an urgent need to high data rates
Wireless communication, have the circularly polarization microstrip patch antenna demand of wide axial ratio bandwidth more and more.
The main path that existing circularly polarization microstrip patch antenna is realized is single-point feedback either n-point feed, single-point feedback
The advantages of be that structure is simple, it is at low cost, but Circular polarization ratio narrow bandwidth；The advantages of n-point feed be can be improved standing-wave ratio bandwidth and
Circular polarisation bandwidth and inhibit cross polarization, but feeding network is more complex, higher cost.
Summary of the invention
Based on this, the invention reside in overcoming the deficiencies of existing technologies, a kind of circular polarized antenna is provided, to solve feeding network
Complicated problem.
A kind of circular polarized antenna, including feeder pillar and successively spaced reflective metal layer, ground metal layer and radiation
Metal layer；The ground metal layer includes the first sheet metal and the second sheet metal；The outer profile of first sheet metal is rounded,
The inside of first sheet metal offers removal material sections, and the removal material sections include three area ellipticas, and three described ellipse
The center overlapping in circle area, the long axis of two neighboring area elliptica are in 45 ° of angles；The outer profile of second sheet metal is rounded, institute
State the center that the second sheet metal is set to removal material sections, the outer rim of second sheet metal and the inner edge interval of removal material sections
Setting, the inner edge of the first sheet metal and the second sheet metal outer rim are for cooperatively forming TE11 mould and TE21 mould；The radiation metal
Layer includes the first radiation zone, the second radiation zone, the first feeder line and the second feeder line, and one end of first radiation zone is radiated with second
One end of band is electrically connected for coupling to form perturbation with the first sheet metal and the second sheet metal, one end of first feeder line with
The other end of first radiation zone is electrically connected, and the other end of first feeder line and one end of the feeder pillar are electrically connected, feedback
The other end of electric column and the first sheet metal are electrically connected, and one end of second feeder line and the second radiation zone are electrically connected, described
The other end of second feeder line is transmitted for signal.
Above-mentioned circular polarized antenna, in use, the outer rim of the inner edge of the first sheet metal and the second sheet metal cooperatively forms frequency
The biggish TE11 mould of difference and TE21 mould.It couples and to be formed in the first radiation zone, the second radiation zone, the first sheet metal and the second sheet metal
Perturbation under, the difference on the frequency of TE11 mould and TE21 mould reduces, and then has widened the circular polarisation bandwidth of TE11 mould and TE21 mould.
The circular polarized antenna for being formed and there is narrow bandwidth is closed, the first radiation zone and the second radiation zone of radiation metal layer form micro-
It disturbs, the circular polarized antenna of narrow bandwidth widens the circular polarized antenna that bandwidth forms wide bandwidth under the cooperation with perturbation.
First radiation zone and the second radiation zone are of a straight line type in one of the embodiments, the first radiation zone with
Second radiation zone is L-shaped to be vertically arranged；Structure is simple, can effectively widen circular polarisation bandwidth.
The bandwidth of first radiation zone and the second radiation zone is 18mm in one of the embodiments, and described first
The bandwidth of feeder line and the second feeder line is 0.4mm.It can realize that adjustment antenna is low by adjusting the first feeder line and the second feed line length
The cutoff frequency of frequency, the first radiation zone, the second radiation zone, the first feeder line and the second feeder line width adjustment adjustable antenna
Standing wave bandwidth and axial ratio bandwidth, when the bandwidth of the first radiation zone, the second radiation zone is 18mm and the first feeder line and the second feeder line
Bandwidth be 0.4mm, circular polarized antenna has preferable standing wave bandwidth and axial ratio bandwidth.
The long axis of three area ellipticas is equal to each other in one of the embodiments, and the short axle of three area ellipticas is corresponding
It is equal；Circular polarization ratio bandwidth, the standing wave bandwidth of such circular polarized antenna are significantly improved.
First feeder line and the second feeder line are serpentine-like in one of the embodiments,.The first snakelike feeder line and
Two feeder lines can reduce the structure size of antenna, realize miniaturization convenient for circular polarized antenna.
The circular polarized antenna further includes first medium plate in one of the embodiments, and the first medium plate is set
It is placed in the side on radiation metal layer far from ground metal layer.The setting of first medium plate can reduce the low end frequency of antenna, mention
The gain of high antenna.
The circular polarized antenna further includes second medium plate in one of the embodiments, and the second medium plate is set
It is placed between radiation metal layer and ground metal layer, the radiation metal layer is set on second medium plate far from reflective metal layer
Side, the ground metal layer be set on second medium plate close to reflective metal layer side.The setting of second medium plate
It facilitates and realizes that radiation metal layer and ground metal layer interval are arranged.
The reflective metal layer is circular third sheet metal in one of the embodiments,.Structure is simple, and can be with
Circular first sheet metal is corresponding, saves material.
The circular polarized antenna further includes being set to ground metal layer and reflective metal layer in one of the embodiments,
Between plastic column, one end of the plastic column connect with ground metal layer, the other end and reflective metal layer of the plastic column
Connection.The setting of plastic column can maintain spaced state convenient for ground metal layer and reflective metal layer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of circular polarized antenna described in an embodiment；
Fig. 2 is the structural schematic diagram of radiation metal layer described in an embodiment；
Fig. 3 is the structural schematic diagram of ground metal layer described in an embodiment；
Fig. 4 is the standing wave bandwidth figure of circular polarized antenna described in an embodiment；
Fig. 5 is the axial ratio bandwidth figure of circular polarized antenna described in an embodiment.
Description of symbols:
110, radiation metal layer, the 111, first radiation zone, the 112, second radiation zone, the 113, first feeder line, the 114, second feedback
Line, 120, ground metal layer, the 121, first sheet metal, 121a, removal material sections, the 122, second sheet metal, 130, reflective metals
Layer, 210, first medium plate, 220, second medium plate, 300, feeder pillar, 400, dielectric layer, 500, plastic column.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawing
Give better embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose of providing these embodiments is that making to understand more the disclosure
Add thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper",
There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are
For illustrative purposes, it is not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more
Any and all combinations of relevant listed item.
As shown in connection with fig. 1, an embodiment provides a kind of circular polarized antenna, including feeder pillar 300 and successively spaced
Reflective metal layer 130, ground metal layer 120 and radiation metal layer 110.As shown in connection with fig. 3, the ground metal layer 120 includes
First sheet metal 121 and the second sheet metal 122；The outer profile of first sheet metal 121 is rounded, first sheet metal
121 inside offers removal material sections 121a, and the removal material sections 121a includes three area ellipticas, three area ellipticas
Center overlapping, the long axis of two neighboring area elliptica is in 45 ° of angles；The outer profile of second sheet metal 122 is rounded, described
Second sheet metal 122 is set to the center of removal material sections 121a, the outer rim of second sheet metal 122 and removal material sections
The inner edge interval of 121a is arranged, the inner edge of the first sheet metal 121 and 122 outer rim of the second sheet metal for cooperatively form TE11 mould and
TE21 mould；As shown in connection with fig. 2, the radiation metal layer 110 includes the first radiation zone 111, the second radiation zone 112, the first feeder line
113 and second feeder line 114, one end of one end of first radiation zone 111 and the second radiation zone 112 is electrically connected for the
One sheet metal 121 and the coupling of the second sheet metal 122 form perturbation, one end of first feeder line 113 and the first radiation zone 111
The other end is electrically connected, and one end of the other end of first feeder line 113 and the feeder pillar 300 is electrically connected, feeder pillar 300
The other end and the first sheet metal 121 be electrically connected, one end of second feeder line 114 and the second radiation zone 112 are electrically connected,
The other end of second feeder line 114 is transmitted for signal.
Above-mentioned circular polarized antenna, in use, the outer rim of the inner edge of the first sheet metal 121 and the second sheet metal 122 cooperates shape
At the biggish TE11 mould of difference on the frequency and TE21 mould.In the first radiation zone 111, the second radiation zone 112, the first sheet metal 121 and
Under the perturbation that the coupling of two sheet metals 122 is formed, the difference on the frequency of TE11 mould and TE21 mould reduces, and then has widened TE11 mould and TE21
The circular polarisation bandwidth of mould.
In one embodiment, first radiation zone 111 and the second radiation zone 112 are of a straight line type, the first radiation zone 111 with
Second radiation zone 112 is L-shaped to be vertically arranged.Structure is simple, can effectively widen circular polarisation bandwidth.
In one embodiment, the bandwidth of first radiation zone 111 and the second radiation zone 112 is 18mm, first feedback
The bandwidth of line 113 and the second feeder line 114 is 0.4mm.It can be realized by adjusting the first feeder line 113 and 114 length of the second feeder line
Adjust the cutoff frequency of antenna low frequency, the first radiation zone 111, the second radiation zone 112, the first feeder line 113 and the second feeder line 114
The standing wave bandwidth and axial ratio bandwidth of the adjustable antenna of width adjustment, when the bandwidth of the first radiation zone 111, the second radiation zone 112
The bandwidth for being 18mm and the first feeder line 113 and the second feeder line 114 is 0.4mm, and circular polarized antenna has preferable standing wave band
Wide and axial ratio bandwidth.
In one embodiment, the long axis of three area ellipticas is equal to each other, and the short axle of three area ellipticas is equal to each other；So
Circular polarization ratio bandwidth, the standing wave bandwidth of circular polarized antenna are significantly improved.
In one embodiment, first feeder line 113 and the second feeder line 114 are serpentine-like.The first snakelike feeder line 113 and
Two feeder lines 114 can reduce the structure size of antenna, realize miniaturization convenient for circular polarized antenna.
In one embodiment, the circular polarized antenna further includes first medium plate 210, and the first medium plate 210 is arranged
In the side of ground metal layer 120 separate on radiation metal layer 110.The setting of first medium plate 210 can reduce the low side of antenna
Frequency improves the gain of antenna.
As shown in connection with fig. 1, in an embodiment, the circular polarized antenna further includes second medium plate 220, and described second is situated between
Scutum 220 is set between radiation metal layer 110 and ground metal layer 120, and the radiation metal layer 110 is set to second medium
Far from the side of reflective metal layer 130 on plate 220, the ground metal layer 120 is set on second medium plate 220 by near reflex
The side of metal layer 130.The setting of second medium plate 220, which facilitates, realizes that radiation metal layer 110 and ground metal layer 120 are spaced
Setting.
It should be noted that the etching of ground metal layer 120 or plating are formed on second medium plate 220, and feed metal
110 etching of layer or plating are formed on first medium plate 210 or second medium plate 220.Specifically, in the present embodiment,
Ground metal layer 120 and radiation metal layer 110, which etch, to be formed on second medium plate 220.
In one embodiment, the reflective metal layer 130 is circular third sheet metal.Structure is simple, and can be with circle
The first sheet metal 121 it is corresponding, save material.
In one embodiment, the circular polarized antenna further include be set to ground metal layer 120 and reflective metal layer 130 it
Between plastic column 500, one end of the plastic column 500 connect with ground metal layer 120, the other end of the plastic column 500 with
Reflective metal layer 130 connects.The setting of plastic column 500 can maintain interval to set convenient for ground metal layer 120 and reflective metal layer 130
The state set.
Specifically, dielectric layer 400 is equipped between the reflective metal layer 130 and ground metal layer 120.Further, should
Dielectric layer 400 is air layer.Preferably, the spacing between ground metal layer 120 and reflective metal layer 130 is 35mm.
As shown in connection with fig. 4, the standing wave bandwidth of the circular polarized antenna of the present embodiment is 1.24-1.82GHz, reaches 40.6%.
Reach 22.7% in conjunction with Fig. 5, the Circular polarization ratio bandwidth 1.25--1.57GHz of the circular polarized antenna of the present embodiment.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (9)
1. a kind of circular polarized antenna, which is characterized in that including feeder pillar and successively spaced reflective metal layer, grounded metal
Layer, radiation metal layer；
The ground metal layer includes the first sheet metal and the second sheet metal；The outer profile of first sheet metal is rounded, institute
The inside for stating the first sheet metal offers removal material sections, and the removal material sections include three area ellipticas, three ellipses
The center in area is overlapped, and the long axis of two neighboring area elliptica is in 45 ° of angles；The outer profile of second sheet metal is rounded, described
Second sheet metal is set to the center of removal material sections, and the outer rim of second sheet metal and the inner edge interval of removal material sections are set
It sets, the inner edge of the first sheet metal and the second sheet metal outer rim are for cooperatively forming TE11 mould and TE21 mould；
The radiation metal layer includes the first radiation zone, the second radiation zone, the first feeder line and the second feeder line, first radiation zone
One end of one end and the second radiation zone be electrically connected for coupling to form perturbation with the first sheet metal and the second sheet metal, it is described
The other end of one end of first feeder line and the first radiation zone is electrically connected, the other end and the feeder pillar of first feeder line
One end is electrically connected, and the other end of feeder pillar and the first sheet metal are electrically connected, one end of second feeder line and the second radiation
The other end of charging property connection, second feeder line is transmitted for signal.
2. circular polarized antenna according to claim 1, which is characterized in that first radiation zone and the second radiation zone are in
Linear type, the first radiation zone with the second radiation zone is L-shaped is vertically arranged.
3. circular polarized antenna according to claim 1, which is characterized in that the band of first radiation zone and the second radiation zone
Width is 18mm, and the bandwidth of first feeder line and the second feeder line is 0.4mm.
4. circular polarized antenna according to claim 1, which is characterized in that the long axis of three area ellipticas is equal to each other,
The short axle of three area ellipticas is equal to each other.
5. circular polarized antenna according to claim 1, which is characterized in that first feeder line and the second feeder line are in snake
Shape.
6. circular polarized antenna according to claim 1, which is characterized in that the circular polarized antenna further includes first medium
Plate, the first medium plate are set to the side on radiation metal layer far from ground metal layer.
7. circular polarized antenna according to claim 1, which is characterized in that further include second medium plate, the second medium
Plate is set between radiation metal layer and ground metal layer, and the radiation metal layer is set on second medium plate far from reflection gold
Belong to the side of layer, the ground metal layer is set to the side on second medium plate close to reflective metal layer.
8. circular polarized antenna according to claim 1, which is characterized in that the reflective metal layer is circular third metal
Piece.
9. circular polarized antenna according to claim 1, which is characterized in that further include being set to ground metal layer and reflection gold
Belong to the plastic column between layer, one end of the plastic column is connect with ground metal layer, the other end and reflection gold of the plastic column
Belong to layer connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344523.2A CN109616775B (en) | 2018-11-12 | 2018-11-12 | Circularly polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344523.2A CN109616775B (en) | 2018-11-12 | 2018-11-12 | Circularly polarized antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109616775A true CN109616775A (en) | 2019-04-12 |
| CN109616775B CN109616775B (en) | 2020-09-18 |
Family
ID=66003293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811344523.2A Active CN109616775B (en) | 2018-11-12 | 2018-11-12 | Circularly polarized antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN109616775B (en) |
Citations (8)
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|---|---|---|---|---|
| KR100358977B1 (en) * | 2001-02-20 | 2002-11-01 | 엔알디테크 주식회사 | Circular Polarization NRD Guide |
| CN103280627A (en) * | 2013-05-23 | 2013-09-04 | 西安电子科技大学 | CPW (Co-Planar Waveguide) feeding broadband circular polarization antenna |
| CN105161848A (en) * | 2015-09-29 | 2015-12-16 | 中国电子科技集团公司第五十四研究所 | Elliptical slot circularly-polarized microstrip antenna |
| CN105226390A (en) * | 2015-10-16 | 2016-01-06 | 大连海事大学 | A kind of 840/920MHz double frequency round polarized radio frequency identification reader antenna and impedance matching methods thereof |
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2018
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| KR100358977B1 (en) * | 2001-02-20 | 2002-11-01 | 엔알디테크 주식회사 | Circular Polarization NRD Guide |
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| CN105161848A (en) * | 2015-09-29 | 2015-12-16 | 中国电子科技集团公司第五十四研究所 | Elliptical slot circularly-polarized microstrip antenna |
| CN105305045A (en) * | 2015-10-15 | 2016-02-03 | 厦门大学 | T-shaped/inclined-L-shaped current guide slit dual-frequency broadband dual-circular polarization microstrip laminated antenna |
| CN105226390A (en) * | 2015-10-16 | 2016-01-06 | 大连海事大学 | A kind of 840/920MHz double frequency round polarized radio frequency identification reader antenna and impedance matching methods thereof |
| CN105789908A (en) * | 2016-04-19 | 2016-07-20 | 电子科技大学 | Novel cylindrical surface luneberg lens antenna capable of realizing circular polarization or bi-circular polarization |
| CN206098687U (en) * | 2016-09-30 | 2017-04-12 | 深圳市维力谷无线技术股份有限公司 | Support navigation antenna of low section high -gain of multisystem |
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| CN109616775B (en) | 2020-09-18 |
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