CN101562280A - Bipolar feed source device and antenna - Google Patents
Bipolar feed source device and antenna Download PDFInfo
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- CN101562280A CN101562280A CN 200910107391 CN200910107391A CN101562280A CN 101562280 A CN101562280 A CN 101562280A CN 200910107391 CN200910107391 CN 200910107391 CN 200910107391 A CN200910107391 A CN 200910107391A CN 101562280 A CN101562280 A CN 101562280A
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- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 230000003760 hair shine Effects 0.000 claims description 3
- 240000000233 Melia azedarach Species 0.000 claims description 2
- 238000005388 cross polarization Methods 0.000 abstract description 10
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- 238000002955 isolation Methods 0.000 description 3
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Abstract
The invention is applicable to the field of an antenna and provides a bipolar feed source device and an antenna. The bipolar feed source device comprises a feed source horn, a round waveguide, a round-rectangle transition unit, a polarization rotating joint and a second input port that are connected sequentially, a pin unit arranged on the central axis line of the round waveguide and a first input port which is electrically connected with the round waveguide feed; the polarization rotating joint is a wave guide with a sharp angle in the polarization direction; the polarization rotating joint arranges the feed waveguide of the first input port and the feed waveguide of the second input port in the same plane by the round-rectangle transition unit. The bipolar feed source device adopts the waveguide-type polarization rotating joint, arranges the feed waveguides of two input ports in the same plane by the round-rectangle transition unit, realizes the excitation chamber of small size and small hole surface shielding and meets the requirements of low voltage standing wave ratio and high cross polarization discrimination rate simultaneously.
Description
Technical field
The invention belongs to field of antenna, relate in particular to a kind of bipolar feed source device and antenna.
Background technology
The feed forward type bipolar feed source device is in order to satisfy the requirement of channeling, cross polarization discrimination must be better than-30dB, yet because two orthopoles of bipolar feed source change into 90 degree, the feed waveguide of two-port is orthogonal, wherein must there be the limit of the broad of a waveguide that the aerial radiation actinal surface is caused bigger blocking, the gain and the directional diagram of antenna caused harmful effect.Therefore, bipolar feed source device generally can adopt the structure of polarization rotation, makes the feed waveguide of two ports place same plane, thereby reduces blocking the antenna actinal surface; A suitable Feed Horn also can effectively reduce the feed shielded area simultaneously, and optimizes antenna pattern.
The biorthogonal device that existing bipolar feed source device adopts is the combining structure that connects by the rotary polarization device, or matching is good, or cross polarization discrimination is good; Can not satisfy the requirement of low-voltage standing-wave ratio and high cross polarization resolution simultaneously.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of bipolar feed source device, is intended to solve the problem that existing bipolar feed source can not satisfy low-voltage standing-wave ratio and high cross polarization resolution simultaneously.
The embodiment of the invention is achieved in that a kind of bipolar feed source device, and described bipolar feed source device comprises:
The Feed Horn of Lian Jieing, circular waveguide, circle-square transition element, polarization rotating joint and second input port successively;
Be positioned at the pin unit on the described circular waveguide central axis; And
The first input end mouth that is connected with described circular waveguide feed;
Described polarization rotating joint is and the acutangulate waveguide of polarised direction; Described polarization rotating joint places same plane by described circle-square transition element with the feed waveguide of described first input end mouth and the feed waveguide of described second input port.
In embodiments of the present invention, described polarization rotating joint is double ridged waveguide or the rectangular waveguide with polarised direction angle at 45.
As one embodiment of the present of invention, two ridge width of described double ridged waveguide are 0.2～0.8 times of operation wavelength.
In embodiments of the present invention, described circle-square transition element is that 2 or 3 rank rectangles form to the transition structure of circular gradual change is continuous.
As one embodiment of the present of invention, described first input end mouth and described second input port are rectangular waveguide, and described first input end mouth is connected with the mode feed of described circular waveguide by the window coupling.
In embodiments of the present invention, described Feed Horn is dual mode horn or multimode horn.
In embodiments of the present invention, described pin unit comprises the 2-5 one metal wire, and described wire is positioned on the described circular waveguide central axis and becomes yi word pattern to arrange.
The purpose of the embodiment of the invention also is to provide a kind of antenna, described antenna comprises: parabolic and be positioned near the described paraboloidal focus and with illumination angle and shine described paraboloidal bipolar feed source device, described bipolar feed source device adopts above-mentioned bipolar feed source device.
As one embodiment of the present of invention, it is 120 °-160 ° that described bipolar feed source device shines described paraboloidal illumination angle.
As one embodiment of the present of invention, described parabolic edge vertical extent has the metal apron.
The bipolar feed source device that the embodiment of the invention provides adopts the waveguide type polarization rotating joint, and the feed waveguide of two input ports is placed same plane in conjunction with circle-square transition element, realized that the excitation cavity of reduced size and less actinal surface block, and have satisfied the requirement of low-voltage standing-wave ratio and high cross polarization resolution simultaneously.
Description of drawings
Fig. 1 is the structural representation of the bipolar feed source device that provides of the embodiment of the invention;
Fig. 2 is the structural representation of polarization rotating joint in the bipolar feed source device that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
The bipolar feed source device that the embodiment of the invention provides adopts the waveguide type polarization rotating joint, and the feed waveguide of two input ports is placed same plane in conjunction with circle-square transition element, realized that the excitation cavity of reduced size and less actinal surface block, and have satisfied the requirement of low-voltage standing-wave ratio and high cross polarization resolution simultaneously.
The bipolar feed source device that the embodiment of the invention provides is mainly used in the microwave communication antenna, and its structural representation for convenience of explanation, only shows the part relevant with the embodiment of the invention as shown in Figure 1, and details are as follows.
Bipolar feed source device comprises: Feed Horn 1, circular waveguide 2, circle-square transition element 3, polarization rotating joint 4, second input port 5, pin unit 6 and first input end mouth 7; Wherein Feed Horn 1, circular waveguide 2, circle-square transition element 3, polarization rotating joint 4 and second input port 5 are connected successively; Pin unit 6 is positioned on the central axis of circular waveguide 2; First input end mouth 7 is connected with circular waveguide 2 feeds; Polarization rotating joint 4 is and the acutangulate waveguide of polarised direction; Polarization rotating joint 4 places same plane by circle-square transition element with the feed waveguide of first input end mouth 7 and the feed waveguide of second input port 5.
The bipolar feed source device that adopts the embodiment of the invention to provide can be realized blocking than low profile, the efficient that guarantees antenna is more than 55%, can satisfy low-voltage standing-wave ratio and high cross polarization resolution simultaneously again, promptly voltage standing wave ratio is better than 1.2: 1, and cross polarization discrimination is better than-38dB.
In embodiments of the present invention, Feed Horn 1 can be dual mode horn, also can be multimode horn; By having encouraged useful higher mode to carry out changes such as correction, primary reflection surface is better shone to elementary directional diagram.Wherein, Feed Horn 1 is closely connected with circular waveguide 2, in order to avoid encouraged unnecessary higher mode.
In embodiments of the present invention, an end of circular waveguide 2 is connected with Feed Horn 1, and the other end is connected with circle-square transition element 3, and circular waveguide 2 also is connected with first input end mouth 7 by the mode of window coupling; Can obtain voltage standing wave ratio preferably by the position of adjusting first input end mouth 7, the center line of first input end mouth 7 is 0.5 λ～2 λ with circular waveguide 2 is connected end face with Feed Horn 1 vertical range, generally gets 1.1 λ.
As one embodiment of the present of invention, circular waveguide 2 is a metal tube, and the internal diameter of metal tube is 0.3～0.38 times of operation wavelength λ, generally gets 0.35 λ; Circular waveguide 2 is used to transmit main mould TE11 mould, and other higher modes all are cut off.
In embodiments of the present invention, an end of polarization rotating joint 4 is connected with second input port 5, and the other end is connected with circle-square transition element 3; Polarization rotating joint 4 can adopt the double ridged waveguide structure, also can adopt Rectangular Waveguide Structure, and wherein, Rectangular Waveguide Structure is processed easily, but matching is relatively poor; The processing of double ridged waveguide structure is complicated slightly, but matching is better.
Fig. 2 shows the structural representation of the polarization rotating joint that adopts the double ridged waveguide structure, and wherein, polarization rotating joint 4 is the double ridged waveguide with polarised direction angle at 45; Two ridge width a of double ridged waveguide are 0.2～0.8 times of operation wavelength λ, generally get 0.5 λ; Can mate by adjusting two ridge width a and radius of corner, to obtain better voltage standing wave ratio.
In embodiments of the present invention, an end of circle-square transition element 3 is connected with polarization rotating joint 4, and the other end is connected with circular waveguide 2; Circle-square transition element 3 can form to the transition structure of circular gradual change is continuous for 2 or 3 rank rectangles, and every stage structure is rectangle and two semicircle be combined intos, 5 one-tenth 90 degree of the direction of rectangle and second input port in the circle-square transition element 3; Circle-square transition element 3 also can be that other are made up of to the structure of circular gradual change rectangle.As one embodiment of the present of invention, polarization rotating joint 4 can be processed into a part with circle-square transition element 3.
As one embodiment of the present of invention, when circle-square transition element 3 adopts the second order forms, can be so that the structure of bipolar feed source device be more succinct; When circle-square transition element 3 adopts three rank forms, can make bipolar feed source device obtain better voltage standing wave ratio and isolation.The bipolar feed source device that the embodiment of the invention provides can obviously improve isolation by adopting the second order rectangle to the continuous circle-square transition element 3 that forms of the transition structure of circular gradual change, can obtain to be better than-isolation of 45dB.
In embodiments of the present invention, pin unit 6 comprises the 2-5 one metal wire, and wire is positioned on the central axis of circular waveguide 2 and becomes yi word pattern to arrange.Diameter wiry is got 0.5mm～1.5mm, generally gets 1mm; Length wiry is as the criterion with the external diameter of circular waveguide 2, and wire serves as that axle is arranged in a row with the central shaft of circular waveguide 2, and places on the diameter of circular waveguide 2, and is parallel with the polarised direction of first input end mouth 7.
As one embodiment of the present of invention, in the exceptionally straight insertion circular waveguide 2 of 2～5 one metal wires, can obtain voltage standing wave ratio preferably by adjusting the position of wire on the central shaft of circular waveguide 2.In addition, pin unit 6 should be greater than certain value with the distance of polarization rotating joint 4, and to avoid occurring resonance, this value is generally got 0.2 λ, and wherein λ is an operation wavelength.
In embodiments of the present invention, the first input end mouth 7 and second input port 5 are rectangular waveguide; Wherein, first input end mouth 7 is connected with the mode feed of circular waveguide 2 by the window coupling; Second input port 5 is connected with polarization rotating joint 4.In addition, first input end mouth 7 forms quadrature device structure with pin unit 6 and circular waveguide 2.
The bipolar feed source device that the embodiment of the invention provides compared with prior art, abandoned the structure of polarization whirligig connection biorthogonal device, adopted novel waveguide type polarization rotating joint 4 to connect the structure of circle-square transition element 3, realized polarization rotation and circle-torque conversion dexterously, improved voltage standing wave ratio effectively and guarantee polarization purity; Simultaneously also by adopting multimode horn to realize the gradeization of elementary directional diagram.
The antenna that the embodiment of the invention provides comprises parabola and bipolar feed source device; Wherein, bipolar feed source device comprises: Feed Horn 1, circular waveguide 2, circle-square transition element 3, polarization rotating joint 4, second input port 5, pin unit 6 and first input end mouth 7; Feed Horn 1 is near the paraboloidal symmetry axis focus, is connected and fixes with parabolic by first input end mouth 7, and feed horn 1, circular waveguide 2, pin unit 6, polarization rotating joint 4, circle-square transition element 3 form a line with primary reflection surface, are that symmetry axis becomes axial symmetry or rotation symmetry with paraboloidal symmetry axis.
As one embodiment of the present of invention, first input end mouth 7 with parabolic by oxygen welding mode or flange is connected and fix.
In embodiments of the present invention, parabola have certain burnt footpath than; Bipolar feed source device is positioned near the paraboloidal focus and shines parabolic with a certain illumination angle; Wherein, to shine paraboloidal illumination angle be 120 °-160 ° to bipolar feed source device; Parabola is shone with certain illumination angle by bipolar feed source device, can be so that antenna obtains higher gain.
As one embodiment of the present of invention, the central shaft of circular waveguide 2 overlaps with paraboloid of revolution central shaft.
As one embodiment of the present of invention, parabolic edge vertical extent has the metal apron, plays shielding action, can suppress the radiation secondary lobe, optimizes antenna pattern.
The bipolar feed source device that the embodiment of the invention provides adopts the waveguide type polarization rotating joint, and the feed waveguide of two input ports is placed same plane in conjunction with circle-square transition element, realized that the excitation cavity of reduced size and less actinal surface block, and have satisfied the requirement of low-voltage standing-wave ratio and high cross polarization resolution simultaneously.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of bipolar feed source device is characterized in that, described bipolar feed source device comprises:
The Feed Horn of Lian Jieing, circular waveguide, circle-square transition element, polarization rotating joint and second input port successively;
Be positioned at the pin unit on the described circular waveguide central axis; And
The first input end mouth that is connected with described circular waveguide feed;
Described polarization rotating joint is and the acutangulate waveguide of polarised direction; Described polarization rotating joint places same plane by described circle-square transition element with the feed waveguide of described first input end mouth and the feed waveguide of described second input port.
2, bipolar feed source device as claimed in claim 1 is characterized in that, described polarization rotating joint is double ridged waveguide or the rectangular waveguide with polarised direction angle at 45.
3, bipolar feed source device as claimed in claim 2 is characterized in that, two ridge width of described double ridged waveguide are 0.2～0.8 times of operation wavelength.
4, bipolar feed source device as claimed in claim 1 is characterized in that, described circle-square transition element is that 2 or 3 rank rectangles form to the transition structure of circular gradual change is continuous.
5, bipolar feed source device as claimed in claim 1 is characterized in that, described first input end mouth and described second input port are rectangular waveguide, and described first input end mouth is connected with the mode feed of described circular waveguide by the window coupling.
6, bipolar feed source device as claimed in claim 1 is characterized in that, described Feed Horn is dual mode horn or multimode horn.
7, bipolar feed source device as claimed in claim 1 is characterized in that, described pin unit comprises the 2-5 one metal wire, and described wire is positioned on the described circular waveguide central axis and becomes yi word pattern to arrange.
8, a kind of antenna, it is characterized in that, described antenna comprises: parabolic and be positioned near the described paraboloidal focus and with illumination angle and shine described paraboloidal bipolar feed source device, described bipolar feed source device adopts each described bipolar feed source device of claim 1-7.
9, antenna as claimed in claim 8 is characterized in that, it is 120 °～160 ° that described bipolar feed source device shines described paraboloidal illumination angle.
10, antenna as claimed in claim 8 is characterized in that, described parabolic edge vertical extent has the metal apron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910107391 CN101562280B (en) | 2009-05-22 | 2009-05-22 | Bipolar feed source device and antenna |
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| CN 200910107391 CN101562280B (en) | 2009-05-22 | 2009-05-22 | Bipolar feed source device and antenna |
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| CN101562280A true CN101562280A (en) | 2009-10-21 |
| CN101562280B CN101562280B (en) | 2012-11-14 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441335A (en) * | 2013-09-10 | 2013-12-11 | 西安电子科技大学 | Broadband wire source for planar waveguide CTS antenna feed device |
| CN103606730A (en) * | 2013-11-18 | 2014-02-26 | 京信通信系统（中国）有限公司 | Satellite station feed source component |
| CN103633449A (en) * | 2010-03-12 | 2014-03-12 | 安德鲁有限责任公司 | Dual-polarized reflector antenna component |
| CN103779663A (en) * | 2014-02-26 | 2014-05-07 | 南京信息工程大学 | Dual-frequency orthogonal polarization high-isolation horn antenna |
| CN103794885A (en) * | 2014-01-17 | 2014-05-14 | 西安空间无线电技术研究所 | Low sidelobe feed-forward reflector antenna |
| TWI483465B (en) * | 2010-08-10 | 2015-05-01 | Victory Microwave Corp | Dual polarized waveguide slot array and antenna |
| CN104953294A (en) * | 2015-07-17 | 2015-09-30 | 桂林安德立通信技术有限公司 | Feed source with low standing-wave ratio and high cross polarization |
| US9166299B2 (en) | 2009-05-23 | 2015-10-20 | Victory Microwave Corporation | Ridged waveguide slot array |
| CN105006620A (en) * | 2015-08-24 | 2015-10-28 | 江苏贝孚德通讯科技股份有限公司 | Waveguide square and round converting member |
| US9368878B2 (en) | 2009-05-23 | 2016-06-14 | Pyras Technology Inc. | Ridge waveguide slot array for broadband application |
| CN109149116A (en) * | 2018-08-23 | 2019-01-04 | 西安空间无线电技术研究所 | A kind of Novel Bipolar electromagnetic horn |
| CN114047628A (en) * | 2021-11-22 | 2022-02-15 | 南通大学 | Design method of adiabatic polarization rotator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2126491U (en) * | 1992-04-25 | 1992-12-30 | 贵州省国营都匀无线电器材厂 | Principal focus double-polarized feeder source for receiving of tv. |
| US6720840B2 (en) * | 2002-08-15 | 2004-04-13 | Radio Frequency Systems Inc. | Polarization rotationer |
-
2009
- 2009-05-22 CN CN 200910107391 patent/CN101562280B/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9368878B2 (en) | 2009-05-23 | 2016-06-14 | Pyras Technology Inc. | Ridge waveguide slot array for broadband application |
| US9166299B2 (en) | 2009-05-23 | 2015-10-20 | Victory Microwave Corporation | Ridged waveguide slot array |
| CN103633449A (en) * | 2010-03-12 | 2014-03-12 | 安德鲁有限责任公司 | Dual-polarized reflector antenna component |
| CN103633449B (en) * | 2010-03-12 | 2016-05-25 | 康普技术有限责任公司 | Dual-polarized reflector antenna assembly |
| TWI483465B (en) * | 2010-08-10 | 2015-05-01 | Victory Microwave Corp | Dual polarized waveguide slot array and antenna |
| CN103441335A (en) * | 2013-09-10 | 2013-12-11 | 西安电子科技大学 | Broadband wire source for planar waveguide CTS antenna feed device |
| CN103441335B (en) * | 2013-09-10 | 2015-05-06 | 西安电子科技大学 | Broadband wire source for planar waveguide CTS antenna feed device |
| CN103606730A (en) * | 2013-11-18 | 2014-02-26 | 京信通信系统（中国）有限公司 | Satellite station feed source component |
| CN103606730B (en) * | 2013-11-18 | 2016-04-06 | 京信通信系统（中国）有限公司 | A kind of satellite station feed assembly |
| CN103794885B (en) * | 2014-01-17 | 2015-11-11 | 西安空间无线电技术研究所 | A kind of Sidelobe feedforward reflector antenna |
| CN103794885A (en) * | 2014-01-17 | 2014-05-14 | 西安空间无线电技术研究所 | Low sidelobe feed-forward reflector antenna |
| CN103779663A (en) * | 2014-02-26 | 2014-05-07 | 南京信息工程大学 | Dual-frequency orthogonal polarization high-isolation horn antenna |
| CN103779663B (en) * | 2014-02-26 | 2016-08-17 | 南京信息工程大学 | Double frequency cross polarization high-isolation electromagnetic horn |
| CN104953294A (en) * | 2015-07-17 | 2015-09-30 | 桂林安德立通信技术有限公司 | Feed source with low standing-wave ratio and high cross polarization |
| CN105006620A (en) * | 2015-08-24 | 2015-10-28 | 江苏贝孚德通讯科技股份有限公司 | Waveguide square and round converting member |
| CN105006620B (en) * | 2015-08-24 | 2019-02-01 | 江苏贝孚德通讯科技股份有限公司 | A kind of waveguide circumference converting member |
| CN109149116A (en) * | 2018-08-23 | 2019-01-04 | 西安空间无线电技术研究所 | A kind of Novel Bipolar electromagnetic horn |
| CN109149116B (en) * | 2018-08-23 | 2020-06-09 | 西安空间无线电技术研究所 | Novel dual-polarized horn antenna |
| CN114047628A (en) * | 2021-11-22 | 2022-02-15 | 南通大学 | Design method of adiabatic polarization rotator |
| CN114047628B (en) * | 2021-11-22 | 2024-02-02 | 南通大学 | Design method of adiabatic polarization rotator |
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