CN204809400U - Circular polarized antenna - Google Patents
Circular polarized antenna Download PDFInfo
- Publication number
- CN204809400U CN204809400U CN201520600867.0U CN201520600867U CN204809400U CN 204809400 U CN204809400 U CN 204809400U CN 201520600867 U CN201520600867 U CN 201520600867U CN 204809400 U CN204809400 U CN 204809400U
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- Prior art keywords
- curve
- circular polarized
- polarized antenna
- hook structure
- slab
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Abstract
The utility model discloses a circular polarized antenna in communication, the field of observing and controling, include horn antenna body and rectangular waveguide (6) that are used for the feed, the horn antenna body include radiating layer (1), feed network layer dielectric plate (2) and reflecting cavity layer (3), feed network layer dielectric plate (2) set up in the below of radiating layer (1), reflecting cavity layer (3) set up in the below on feed network layer dielectric plate (2), its characterized in that: polarizer on feed network layer dielectric plate (2) closes the hook structure that forms for inner curve and outer curve enclose, and inner curve and outer curve are the gradual change curve, is the feed input with the other end of the hook structure that the gib head is relative of hook structure. The utility model discloses an according to communication, observe and control and to have to what polarization purity, installation space required the design that the standing wave bandwidth is wide, the wide antenna structure of axial ratio bandwidth, have still that the profile is low, the size is little, easy characteristics such as integrated, the low profile circular polarized antenna's of aircraft carrier high performance manufacturing in specially adapted communication, the observing and controlling system.
Description
Technical field
The utility model relates to a kind of circular polarized antenna in communication, measurement and control area, the utility model be comparatively applicable to being applied to require circular polarization radiation antenna communication, in TT&C system.
Background technology
The antenna that can form circular polarization at present in communication, TT&C system mainly contains following several version, though respectively have feature in performance, all there is certain deficiency.
1, corner cut circular polarization microstrip antenna: this form antenna structure is simple, and profile is low, but antenna axial ratio, standing wave bandwidth are less than 2%, and radiation efficiency is handsome low, is unfavorable for realizing higher gain.
2, the circular polarization microstrip antenna form of circumscribed circle polarization electric bridge, microstrip antenna axial ratio, usual its of standing wave broader bandwidth of this form are less than 3dB axial ratio bandwidth and are greater than 15%, the standing wave band being less than 2 is wider than 20%, but circumscribed circle polarization electric bridge takes up room comparatively greatly, feeder line is tediously long, differential loss is comparatively large, is unfavorable for antenna, network integration design.
3, circularly-polarizedhorn horn antenna, the circular polarized antenna of this form compares with conventional circular polarization microstrip antenna, and have the advantages that impedance, axial ratio bandwidth are wide, feeding network Insertion Loss is low, and radiation efficiency is high, but feeding network is heavy, is unfavorable for Miniaturization Design.
Utility model content
The purpose of this utility model is avoid the weak point in above-mentioned background technology and provide a kind of circular polarized antenna, and the utility model feature is, impedance, axial ratio bandwidth are wide, radiation efficiency height compact conformation, can realize the feature such as antenna, network integration design.
The utility model is achieved in that a kind of circular polarized antenna comprises horn antenna body and the rectangular waveguide 6 for feed, described horn antenna body comprises radiating layer 1, transmission network network layers dielectric-slab 2 and reflection cavity layer 3, transmission network network layers dielectric-slab 2 is arranged on the below of radiating layer 1, reflection cavity layer 3 is arranged on the below of transmission network network layers dielectric-slab 2, it is characterized in that: the polarizer on transmission network network layers dielectric-slab 2 is the hook structure that inner curve and external curve enclose, inner curve and external curve are gradient ramp, the other end of the hook structure relative with the gib head of hook structure is power feed inputs.
Wherein, described inner curve ρ
1meet following equation: ρ
1=(D/2) e
-a φ;
External curve ρ
2meet following equation:
Wherein, D is reflection cavity diameter, and a is coefficient of curvature 1, δ
afor coefficient of curvature 2, φ is the anglec of rotation, t is feeder line width.
Wherein, described horn antenna body is two and to share the shape of a rectangular waveguide 6, two polarizers identical, to be another polarizer around the geometric center of rectangular waveguide 6 rotate the position of one of them polarizer position of 180 °.
Wherein, described radiating layer 1 is gradual change square opening loudspeaker, and described reflection cavity layer 3 is circular back of the body chamber 7, and square opening loudspeaker and circular back of the body between chamber are cylindrical cavity transition.
The utility model compares with background technology and has the following advantages:
1, the utility model is provided with circular polarized antenna 1 parts of hook feed structure, the circular polarized antenna of this hook feed structure is formed by by radiating layer 1, transmission network network layers dielectric-slab 2, reflection cavity layer 3, high-quality circular polarization directional beam can be produced in broadband, it is less than 3dB axial ratio bandwidth and is greater than 30%, and the standing wave band being less than 1.5 is wider than 30%., being greater than 80% aperture radiation efficiency bandwidth is 30%.
2, the utility model entire physical structure is simple, compact, compare with the circularly-polarizedhorn horn antenna of other waveguiding structures, without the need to external polarizer structure, lower profile can be obtained like this and broadband circle polarized emission requirements can be met, the design achieves antenna and network integration designs simultaneously, can array antenna design be realized, be applicable in the communication system of the circular polarized antenna requiring high band.
Accompanying drawing explanation
Fig. 1 is the utility model three-dimensional structure schematic diagram.
Fig. 2 is the utility model structure side view.
Fig. 3 is feeding network figure of the present utility model.
Embodiment
The utility model is described in further detail for reference Fig. 1, Fig. 2, Fig. 3 and specific embodiment.
A kind of circular polarized antenna, comprise horn antenna body and the rectangular waveguide 6 for feed, described horn antenna body comprises radiating layer 1, transmission network network layers dielectric-slab 2 and reflection cavity layer 3, transmission network network layers dielectric-slab 2 is arranged on the below of radiating layer 1, reflection cavity layer 3 is arranged on the below of transmission network network layers dielectric-slab 2, it is characterized in that: the polarizer on transmission network network layers dielectric-slab 2 is the hook structure that inner curve and external curve enclose, inner curve and external curve are gradient ramp, and the other end of the hook structure relative with the gib head of hook structure is power feed inputs.Described radiating layer 1 is gradual change square opening loudspeaker 4, and described reflection cavity layer 3 is circular back of the body chamber 7, and square opening loudspeaker and circular back of the body between chamber are cylindrical cavity transition 5.
Wherein, described inner curve ρ
1meet following equation: ρ
1=(D/2) e
-a φ;
External curve ρ
2meet following equation:
Wherein, D is reflection cavity diameter, and a is coefficient of curvature 1, δ
afor coefficient of curvature 2, φ is the anglec of rotation, t is feeder line width.
As optimal enforcement example of the present utility model, described horn antenna body is two and shares a rectangular waveguide 6, the shape of two polarizers is identical, to be another polarizer around the geometric center of rectangular waveguide 6 rotate the position of one of them polarizer position of 180 °.
Wherein, two gradual change square opening loudspeaker 4 effects are radiation or receive circular polarization electromagnetic signal, and complete electromagnetic signal conversion, embodiment adopts aluminium by CNC milling machine processing technology, gradual change square opening horn structure can realize higher radiation efficiency, can realize low profile design simultaneously.Transmission network network layers dielectric-slab 2 is printed with polarizer 8, utilize printed board processing technology that antenna can be made to have higher machining accuracy, this polarizer is decided by the inner curve 9 of gradual change and external curve 10, gradual change design makes the surface current of hook feed structure have broadband character, this structure can be carried on the back in chamber 7 in circle and encouraged rotating field, and being radiated free space via cylindrical cavity transition 5 and radiating horn, the circularly polarised wave that this structural excitation rises can meet form good radiation characteristic in the bandwidth of 30%.After a couple's hook structure Rotational Symmetry is placed, and carry out power combing by rectangular waveguide 6, can improve wide angle axial ratio through such design, suppress cross polarization, this is most important for scanning antenna.Reflection cavity layer 3 is made up of two circular back of the body cavity layer, and back of the body cavity configuration ensure that antenna direction radiation, and make antenna have high directionality, this structure convenient antenna carries out embedded conformal design simultaneously.Three kinds of parts by screw, pin, position, spiral shell dress, compress design, ensure not easily leaking outside of signal.
The utility model principle is as follows: when transmitting a signal, rectangular waveguide 6 connects transmitter and transmits, be input to the polarizer 8 of printing on transmission network network layers dielectric-slab 2, be divided into two paths of signals simultaneously, amplitude is equal, in circle back of the body chamber 7, exciter plays circular polarization electromagnetic wave, and this circularly polarised wave has encouraged electromagnetic wave by spatial coupling on two gradual change square opening loudspeaker 4, and is radiated free space by it.The reception of antenna and be emitted as reciprocity process, signal is received by gradual change square opening loudspeaker 4, has encouraged circularly polarized signal, and has extracted composite signal by rectangular waveguide 6, finally output to external receiver by coaxial cable by the polarizer 8 printed.
Claims (4)
1. a circular polarized antenna, comprise horn antenna body and the rectangular waveguide (6) for feed, described horn antenna body comprises radiating layer (1), transmission network network layers dielectric-slab (2) and reflection cavity layer (3), transmission network network layers dielectric-slab (2) is arranged on the below of radiating layer (1), reflection cavity layer (3) is arranged on the below of transmission network network layers dielectric-slab (2), it is characterized in that: the polarizer on transmission network network layers dielectric-slab (2) is the hook structure that inner curve and external curve enclose, inner curve and external curve are gradient ramp, the other end of the hook structure relative with the gib head of hook structure is power feed inputs.
2. a kind of circular polarized antenna according to claim 1, is characterized in that: under polar coordinate system (ρ, Φ), described inner curve ρ
1meet following equation: ρ
1=(D/2) e
-a φ;
External curve ρ
2meet following equation:
Wherein, D is reflection cavity diameter, and a is coefficient of curvature 1, δ
afor coefficient of curvature 2, φ is the anglec of rotation, t is feeder line width.
3. a kind of circular polarized antenna according to claim 1, it is characterized in that: described horn antenna body is two and shares a rectangular waveguide (6), the shape of two polarizers is identical, to be another polarizer around the geometric center of rectangular waveguide (6) rotate the position of one of them polarizer position of 180 °.
4. a kind of circular polarized antenna according to claim 1, it is characterized in that: described radiating layer (1) is gradual change square opening loudspeaker, described reflection cavity layer (3) is circular back of the body chamber (7), and square opening loudspeaker and circular back of the body between chamber are cylindrical cavity transition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600867.0U CN204809400U (en) | 2015-08-11 | 2015-08-11 | Circular polarized antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520600867.0U CN204809400U (en) | 2015-08-11 | 2015-08-11 | Circular polarized antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204809400U true CN204809400U (en) | 2015-11-25 |
Family
ID=54594173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520600867.0U Withdrawn - After Issue CN204809400U (en) | 2015-08-11 | 2015-08-11 | Circular polarized antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204809400U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140643A (en) * | 2015-08-11 | 2015-12-09 | 中国电子科技集团公司第五十四研究所 | Circularly polarized antenna |
| CN107221760A (en) * | 2017-07-17 | 2017-09-29 | 中国电子科技集团公司第五十四研究所 | A kind of double frequency round polarized array antenna |
-
2015
- 2015-08-11 CN CN201520600867.0U patent/CN204809400U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105140643A (en) * | 2015-08-11 | 2015-12-09 | 中国电子科技集团公司第五十四研究所 | Circularly polarized antenna |
| CN105140643B (en) * | 2015-08-11 | 2019-02-19 | 中国电子科技集团公司第五十四研究所 | A kind of circular polarized antenna |
| CN107221760A (en) * | 2017-07-17 | 2017-09-29 | 中国电子科技集团公司第五十四研究所 | A kind of double frequency round polarized array antenna |
| CN107221760B (en) * | 2017-07-17 | 2023-04-07 | 中国电子科技集团公司第五十四研究所 | Double-frequency circularly polarized array antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151125 Effective date of abandoning: 20190219 |