CN101170219B - Round polarization short rear radiation antenna with spiral feedback source - Google Patents
Round polarization short rear radiation antenna with spiral feedback source Download PDFInfo
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- CN101170219B CN101170219B CN2007101765208A CN200710176520A CN101170219B CN 101170219 B CN101170219 B CN 101170219B CN 2007101765208 A CN2007101765208 A CN 2007101765208A CN 200710176520 A CN200710176520 A CN 200710176520A CN 101170219 B CN101170219 B CN 101170219B
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Abstract
The invention discloses a circular polarization short backfire antenna with spiral feed source with higher broadband characteristic and smaller using volume from wireless communication antenna field, which comprises a master reflector (1), a sub-reflector (2), a feed source (3), as well as an assisting support (2); the feed source (3) comprises a helical antenna (31) and a feed point allocation device (32); the helical antenna (31) is coiled on the assisting support (2), one end is fixed with the assisting support (2), and the other end is connected with a signal output cable (5) through the feed point allocation device (32). Through adopting the helical antenna as the feed source of backfire antenna, the invention realizes the broadband and circular polarization of the antenna, meanwhile, the invention uses the helical wire to support and replace the special shaft, and to be connected with main parts of the antenna, thereby simplifying the antenna structure, reducing complexity of antenna processing technology, so as to benefit the mass production of the antenna.
Description
Technical field
The present invention relates to the radio antenna technology, particularly the less circular polarized antenna technical field of volume is had relatively high expectations, used to broadband character.
Background technology
Short backfire antenna is used for the less occasion of requirement antenna volume, generally is made up of main reflector, subreflector, feed and supplemental support.Its operation principle is that electric wave comes back reflective between two reflectors of major-minor, every reflection once all some energy from subreflector to external radiation.Existing short backfire antenna mainly is as feed with doublet, crossed dipoles and waveguide.
With doublet and crossed dipoles during as the feed of antenna, because of the resonance characteristic of doublet and dipole itself has determined that the impedance bandwidth of antenna is narrower, the structure of antenna has relative complex during as feed with waveguide, and is bigger at L, S and C-band distributing point waveguide dimensions.In a kind of remodeling backfire antenna patent of patent No. ZL92203292.0, increase the bandwidth of operation of antenna by the method that increases corrugated ring at the surrounding edge of main reflector, but the processing relative complex of corrugated ring, influenced the manufacturability of antenna; In this patent, all use welding manner to be connected between corrugated ring and surrounding edge and surrounding edge and the circular cone reflecting surface in addition, influence the consistency of antenna performance.In the broadband high-gain circular polarized antenna patent of patent No. ZL01250096.8, spiral radiation body, back reflection type chamber and converter connect the antenna structure complex forms by special axle; In addition, the back reflection type chamber is made up of cavity and built-in load ring, and the antenna production cost is also higher relatively.
In " a kind of design of waveguide feed short backfire antenna of novelty " article of 2002 Vol.23 No.2 " guidance and fuse ", people such as the Qiu Jing of Harbin Institute of Technology brightness propose the secondary reflectors of short backfire antenna has been carried out the improvement of circular coneization, make antenna gain improve, but its antenna volume is bigger.
Summary of the invention
Technology of the present invention is dealt with problems and is: the circular polarization short backfire antenna that a kind of batch process simple in structure, suitable, high-gain are provided.
Technical solution of the present invention is: have the circular polarization short backfire antenna of helix feed, be made up of main reflector, subreflector, feed and supplemental support, wherein feed comprises helical antenna and feedback point deployment device.Helical antenna is on supplemental support, and one end and supplemental support are fixed, and the other end links to each other with the signal output cable by feedback point deployment device.
Main reflector is an overall structure, is made up of central plane, conical main body and surrounding edge three parts, by punch forming.
The cone angle of the conical main body of main reflector is the 10-20 degree.
Operation principle of the present invention is: feed adopts the helix form, realizes the broadband of antenna; Feedback point deployment device is the characteristic impedance of feedback point cable with the impedance conversion of backfire antenna, is beneficial to radio signal transmission.Helix sky feed is converted to electromagnetic wave with radiofrequency signal, and to space radiation, the effect of main reflector shiny reflection, it returns the surface wave that transmits to the helical antenna feed, thereby realizes high-gain.
The present invention's advantage compared with prior art is:
1, adopt the feed of helical antenna as backfire antenna, realize the broadband and the circular polarization of antenna, the maximum gain in the bandwidth of 200MHz in effective beam angle is better than 14dBi, and least gain is better than 12.5dBi.
2, use helix support to replace special-purpose axle in the present invention, the critical piece of antenna is coupled together, simplified the structure of antenna; Simultaneously main reflector is simple in structure, and punch forming has reduced the complexity of antenna processing technology, is beneficial to the batch process of antenna.
3, in short backfire antenna,, more help electromagnetic wave propagation by regulating and choosing suitable main reflector cone cone angle.
Description of drawings
Fig. 1 has the schematic diagram of the circular polarization short backfire antenna of helix feed for the present invention;
The schematic diagram of Fig. 2 feed;
The schematic diagram of Fig. 3 main reflector.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention has the circular polarization short backfire antenna of helix feed, 1-main reflector wherein, 2-supplemental support, 3-helical antenna feed, 4-subreflector, 5-signal output cable.
Among Fig. 2, feed 3 comprises helical antenna 31 and feedback point deployment device 32.Helical antenna 31 is on supplemental support 2, and one end and supplemental support 2 are fixing, and the other end links to each other with signal output cable 5 by feedback point deployment device 32.A feedback point deployment device 32 is strip lines of air dielectric, and function is that the impedance conversion with backfire antenna is the characteristic impedance of signal output cable 5, is beneficial to radio signal transmission.
Among Fig. 3, main reflector 1 is made up of central plane 11, conical main body 12 and surrounding edge 13, by punch forming.The cone angle of conical main body 12 is a, and the scope of a is the 10-20 degree.
The central plane 11 of main reflector 1 links to each other with an end of supplemental support 2 by screwed flange, and supplemental support 2 adopts the PEI material of GE company, scribes thread groove on supplemental support 2.Helical antenna 31 is wound in the thread groove of supplemental support; Subreflector 4 links to each other with the other end of supplemental support 2.
The angle of getting main reflector cone angle a is 10,14,20 degree, and the test data of relevant typical gains value of the present invention is as follows:
Getting main reflector cone angle a angle is 10 degree:
Getting the main reflector angle of taper is 14 degree:
Getting main reflector cone angle a angle is 20 degree:
Claims (4)
1. the circular polarization short backfire antenna that has helix feed, form by main reflector (1), subreflector (4), feed (3) and supplemental support (2), main reflector (1) is positioned at supplemental support (2) bottom, subreflector (4) is positioned at supplemental support (2) top, it is characterized in that: feed (3) comprises helical antenna (31) and feedback point deployment device (32); Helical antenna (31) is on supplemental support (2), and one end and supplemental support (2) are fixing, and the other end links to each other with signal output cable (5) by feedback point deployment device (32); Described feedback point deployment device (32) is the strip line of air dielectric, is the characteristic impedance of signal output cable (5) with the impedance conversion of backfire antenna.
2. according to the circular polarization short backfire antenna that has helix feed of claim 1, it is characterized in that: main reflector (1) is an overall structure, is made up of central plane (11), conical main body (12) and surrounding edge (13), by punch forming; Central plane (11) is positioned at conical main body (12) bottom, center drilling, and conical main body (12) top is surrounding edge (13).
3. according to the circular polarization short backfire antenna that has helix feed of claim 2, it is characterized in that: the cone angle of the conical main body (12) of main reflector (1) is the 10-20 degree.
4. according to the circular polarization short backfire antenna that has helix feed of claim 3, it is characterized in that: the cone angle of the conical main body (12) of main reflector (1) is 14 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101765208A CN101170219B (en) | 2007-10-30 | 2007-10-30 | Round polarization short rear radiation antenna with spiral feedback source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101765208A CN101170219B (en) | 2007-10-30 | 2007-10-30 | Round polarization short rear radiation antenna with spiral feedback source |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101170219A CN101170219A (en) | 2008-04-30 |
| CN101170219B true CN101170219B (en) | 2011-04-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101765208A Active CN101170219B (en) | 2007-10-30 | 2007-10-30 | Round polarization short rear radiation antenna with spiral feedback source |
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| CN (1) | CN101170219B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055077A (en) * | 2009-10-29 | 2011-05-11 | 西安空间无线电技术研究所 | Linearly polarized broadband backfire helical antenna |
| WO2012067244A1 (en) * | 2010-11-19 | 2012-05-24 | 株式会社フジクラ | Antenna integrated harness |
| CN103022723B (en) * | 2012-12-12 | 2015-02-04 | 上海航天测控通信研究所 | Small flat ring focus parabolic antenna |
| CN104919650A (en) * | 2013-01-09 | 2015-09-16 | 泰纳股份公司 | A dual antenna |
| CN108598676B (en) * | 2018-04-11 | 2019-08-06 | 南京邮电大学 | A kind of broad beam plane back reflection and two-way circular polarized antenna |
| CN110571532A (en) * | 2019-09-27 | 2019-12-13 | 上海航天测控通信研究所 | circular focus paraboloid backfire antenna |
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2007
- 2007-10-30 CN CN2007101765208A patent/CN101170219B/en active Active
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| CN101170219A (en) | 2008-04-30 |
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