CN202503101U - Common-caliber dual-band dual circularly polarized feed source - Google Patents
Common-caliber dual-band dual circularly polarized feed source Download PDFInfo
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- CN202503101U CN202503101U CN2012201132856U CN201220113285U CN202503101U CN 202503101 U CN202503101 U CN 202503101U CN 2012201132856 U CN2012201132856 U CN 2012201132856U CN 201220113285 U CN201220113285 U CN 201220113285U CN 202503101 U CN202503101 U CN 202503101U
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Abstract
The utility model discloses a common-caliber dual-band dual circularly polarized feed source, comprising a high-band waveguide radiator, a high-band screw alignment circular polarizer, a waveguide orthogonal mode, a low-band printing circular radiator, a printing arc exciter, and a printing circular polarization formation network. And the feed source is characterized in that: the high-band waveguide radiator is nested in the low-band printing circular radiator; the high-band waveguide radiator, the high-band screw alignment circular polarizer and the orthogonal mode are connected to form a high-band circular polarization radiation unit; the low-band printing circular radiator carries out coupled feeding by the arc exciter; and the arc exciter is connected with the printing circular polarization formation network. The provided feed source can work simultaneously at two frequency bands, so that dual circular polarization conversion can be realized and the feed source can have approximately consistent directional diagrams and approximately consistent phase centers in the two frequency bands.
Description
Technical field
The utility model relates to a kind of feed.Be a kind of bore, two-band, double-circle polarization feed for paraboloidal-reflector antenna altogether specifically.
Background technology
Feed is the heart of reflector antenna, and the quality of feed is the performance of decision paraboloidal-reflector antenna directly.For the double frequency paraboloidal-reflector antenna, need the feed of two frequency ranges all to have identical phase center undoubtedly, have approximate consistent directional diagram and just can in two frequency ranges, make paraboloidal-reflector antenna obtain good performance.Like characteristics such as high efficiency, high-gain, low secondary lobes.Though some double-frequency micro-strip antenna or broad-band antenna have double frequency or broadband (can cover double frequency) characteristic; Can be through improving as the feed of paraboloidal-reflector antenna; But the feed that a lot of double-frequency micro-strip antennas or broad-band antenna are formed does not have unified phase center, can be around axially or along axial variation with the frequency change phase center.Directional diagram is apparent in view with frequency change simultaneously, is difficult in two frequency bands, obtain simultaneously approximate consistent directional diagram, thereby causes antenna efficiency low.Work out a kind of approximate consistent directional diagram that in two-band, has, the feed for paraboloidal-reflector antenna with unified phase center is a technical barrier that faces in the paraboloidal-reflector antenna field.
The utility model content
The utility model problem to be solved; Be to overcome the defective that prior art exists; A kind of dual-band dual-circular polarization feed for paraboloidal-reflector antenna of nested has been proposed; This feed can be worked in two frequency ranges simultaneously, can realize the conversion of double-circle polarization, in two frequency ranges, have approximate consistent directional diagram, and have approximate consistent phase center.Can make paraboloidal-reflector antenna in two frequency ranges, have high antenna efficiency, low sidelobe level, also can make two frequency ranges have advantages such as frequency range isolation preferably simultaneously.
A kind of nested type two-band of the utility model double-circle polarization feed (being called for short this feed) comprising: printing-type annulus radiator, printing-type circular arc exciter and the printing-type circular polarization of the waveguide radiator of high band, the screw of high band allotment circular polarizer, waveguide orthogonal mode, low-frequency range form network.It is characterized in that: the high band waveguide radiator is nested in the annulus radiator of waveguide radiator and screw allotment circular polarizer and circular polarization radiation unit that orthogonal mode is connected to form high band, low-frequency range of the middle and high frequency range of annulus radiator of low-frequency range through circular arc exciter coupling feed.The circular arc exciter forms network with printing-type circular polarization and links to each other.Can control the directional diagram of low-frequency range through the diameter of rationally choosing the annulus radiator, thereby guarantee in the irradiation area of reflecting surface, the feed of two frequency ranges has approximate consistent direction.
The utility model can be controlled the variation of directional diagram flexibly through the size of optimizing radiator, so that in two frequency bands, have approximate consistent directional diagram and unified phase center, each frequency range can select different circular polarization modes to work.For public one double frequency that inputs or outputs mouthful or multifrequency, broadband feed, this feed can have good frequency range isolates and compact conformation.These advantages all can improve the performance of paraboloidal-reflector antenna.
Description of drawings
Fig. 1 is the overall structure figure of the array antenna of the utility model; 1 is the annulus radiator, the 2nd of low-frequency range among the figure, the printing-type circular arc exciter, the 3rd of low-frequency range, and the metal ground plane of low-frequency range, the 4th, the printing-type circular polarization of low-frequency range forms network, and the centre is connected with printing-type circular arc exciter through stube cable.The 5th, the circular waveguide radiator, the 6th of high band, the screw allotment circular polarizer, the 7th of high band, the waveguide orthogonal mode of high band, 8 and 9 is respectively the output port of the circularly polarized signal of two rotation directions.
Fig. 2 (a) is that directional diagram, Fig. 2 (b) of the low-frequency range calculated and high band feed is that the edge illumination angle of far-field pattern, the reflecting surface of the low-frequency range calculated and high band reflector antenna is 70 to spend, and the reflecting surface diameter is 24.5 wavelength of low-limit frequency.
Embodiment
Be described further through 1 pair of the utility model of accompanying drawing and advantage thereof below.
Map 1, the frequency ratio of the two-band feed of design is 4.6,0.15 high band wavelength was isolated with the channel of guaranteeing two frequency ranges at the back after the annulus radiator of low-frequency range was installed in high band circular waveguide radiator.The external diameter of the annulus radiator of low-frequency range is 0.21 λ
L, λ
LRepresenting low-frequency range wavelength, internal diameter is 0.107 λ
L, be 0.1058 λ from the height of metal ground plane
L, low-frequency range the external diameter of printing-type circular arc exciter be 0.1779 λ
L, internal diameter is 0.1426 λ
L, be 0.047 λ from the height of metal ground plane
L, low-frequency range the radius of metal ground plane be 0.3235 λ
L, high band the bore of circular waveguide radiator adopt the standard round bore waveguide of corresponding frequency band, allocate screw orientation in the circular polarizer in angle of 45 degrees the time when the linear polarised electromagnetic wave and the screw of high band of incident; Linear polarised electromagnetic wave is broken down into two components consistent and vertical with screw orientation, when two components have the phase delay of 90 degree, has just formed circularly polarised wave.The circularly polarised wave of two rotation directions is exported through two ports of waveguide orthogonal mode respectively.Fig. 2 (a) provided the low-frequency range calculated and high band feed directional diagram, can find out that therefrom the feed directional diagram of two frequency ranges is unanimity relatively.Fig. 2 (b) provided the low-frequency range calculated and high band reflector antenna far-field pattern, can find out that therefrom reflector antenna has high gain and low characteristics such as sidelobe level at this moment.
Claims (1)
1. one kind is total to bore two-band double-circle polarization feed, comprising: printing-type annulus radiator, printing-type circular arc exciter and the printing-type circular polarization of the waveguide radiator of high band, the screw of high band allotment circular polarizer, waveguide orthogonal mode, low-frequency range form network.It is characterized in that: the high band waveguide radiator is nested in the annulus radiator of waveguide radiator and screw allotment circular polarizer and circular polarization radiation unit that orthogonal mode is connected to form high band, low-frequency range of the middle and high frequency range of annulus radiator of low-frequency range through circular arc exciter coupling feed.The circular arc exciter forms network with printing-type circular polarization and links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201132856U CN202503101U (en) | 2012-03-23 | 2012-03-23 | Common-caliber dual-band dual circularly polarized feed source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201132856U CN202503101U (en) | 2012-03-23 | 2012-03-23 | Common-caliber dual-band dual circularly polarized feed source |
Publications (1)
| Publication Number | Publication Date |
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| CN202503101U true CN202503101U (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201132856U Expired - Lifetime CN202503101U (en) | 2012-03-23 | 2012-03-23 | Common-caliber dual-band dual circularly polarized feed source |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610901A (en) * | 2012-03-23 | 2012-07-25 | 彭文峰 | Nested dual-band dual-circular-polarization feed source |
| CN102938497A (en) * | 2012-11-20 | 2013-02-20 | 北京遥测技术研究所 | Four-band multi-polarization co-aperture feed source |
| CN105161862A (en) * | 2015-08-13 | 2015-12-16 | 上海航天测控通信研究所 | Integrated six-frequency-range multipurpose composite feed source |
| CN106684572A (en) * | 2016-12-23 | 2017-05-17 | 中国电子科技集团公司第五十四研究所 | Rapid estimation method for performance of feeding source combining reflection surface |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
-
2012
- 2012-03-23 CN CN2012201132856U patent/CN202503101U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610901A (en) * | 2012-03-23 | 2012-07-25 | 彭文峰 | Nested dual-band dual-circular-polarization feed source |
| CN102610901B (en) * | 2012-03-23 | 2016-07-06 | 彭文峰 | A kind of nested type dual-band dual-circular-polarifeedon feedon source |
| CN102938497A (en) * | 2012-11-20 | 2013-02-20 | 北京遥测技术研究所 | Four-band multi-polarization co-aperture feed source |
| CN102938497B (en) * | 2012-11-20 | 2014-12-17 | 北京遥测技术研究所 | Four-band multi-polarization co-aperture feed source |
| CN105161862A (en) * | 2015-08-13 | 2015-12-16 | 上海航天测控通信研究所 | Integrated six-frequency-range multipurpose composite feed source |
| CN105161862B (en) * | 2015-08-13 | 2017-12-01 | 上海航天测控通信研究所 | A kind of six frequency range multipurpose compound feeds of integration |
| CN106684572A (en) * | 2016-12-23 | 2017-05-17 | 中国电子科技集团公司第五十四研究所 | Rapid estimation method for performance of feeding source combining reflection surface |
| CN106684572B (en) * | 2016-12-23 | 2019-05-31 | 中国电子科技集团公司第五十四研究所 | A kind of feed source performance rapid Estimation method of combination reflecting surface |
| CN113097740A (en) * | 2021-04-08 | 2021-07-09 | 上海航天测控通信研究所 | Double-frequency transmitting-receiving shared double-circular polarization feed source |
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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 |
Granted publication date: 20121024 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |