CN202042599U - Double reflector antenna - Google Patents
Double reflector antenna Download PDFInfo
- Publication number
- CN202042599U CN202042599U CN 201120045781 CN201120045781U CN202042599U CN 202042599 U CN202042599 U CN 202042599U CN 201120045781 CN201120045781 CN 201120045781 CN 201120045781 U CN201120045781 U CN 201120045781U CN 202042599 U CN202042599 U CN 202042599U
- Authority
- CN
- China
- Prior art keywords
- subreflector
- antenna
- feed
- reflector antenna
- reflection surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
Abstract
An embodiment of the utility model provides a double reflector antenna which comprises a feed source, a main reflector and an antenna cover. The feed source is arranged at the center of the main reflector, the antenna cover is positioned above the main reflector, a secondary reflector is disposed in the middle of the antenna cover, and a virtual focus of the secondary reflector and a real focus of the main reflector coincide. The secondary reflector is disposed in the middle of the antenna cover, and no shielding exists between the feed source and the secondary reflector, thereby reducing transmission loss and improving work efficiency of a double curved antenna. Compared with the prior art, the double reflector is simple in structure and leaves out the installation of a metal supporting rod or medium supporting rod, thereby being easy to install and convenient to dismount and maintain.
Description
Technical field
The utility model embodiment relates to communication technical field, relates in particular to a kind of dual reflector antenna.
Background technology
Microwave communication is with the communication system of microwave as carrier, and antenna is in order to finish the conversion of guided wave to radiated wave in microwave system.On transmitting chain, radiofrequency signal is converted to electromagnetic wave to space radiation specifically, on the reception link, electromagnetic wave is converted to radiofrequency signal.
The structure of antenna adopts the form of parabolic antenna usually in the microwave communication, and common parabolic antenna is divided into two kinds on feed forward type antenna and feedback type antenna.Fig. 1 is the profile of feed forward type antenna of the prior art.As shown in Figure 1, the elementary lobe pattern of feed forward type antenna is by feed 1 decision.Feed 1 is installed on the focus of parabolic reflector 2.Fig. 2 is the profile of feedback type antenna of the prior art.As shown in Figure 2, the elementary lobe pattern of feedback type antenna is determined by the compound feed system that feed 3 and subreflector 4 constitute jointly.Feed 3 is installed in the center of parabolic reflector 5, and the virtual focus of subreflector 4 overlaps with the real focus of parabolic reflector 5.In fact, in the feedback type antenna, feed 3 is exactly a primary antenna, towards subreflector 4 radiated electromagnetic waves.Parabolic reflector 5 is passive devices, and the energy that will give off through the feed 3 that subreflector 4 reflects reflects, and the wave beam that reflects has certain directivity, and identical with phase place on the vertical plane, the direction of propagation.Subreflector 4 adopts usually and forms at the dielectric surface metallisation.The feedback type antenna structure is the antenna of double-reflecting face, and wherein parabolic reflector 5 is a primary reflection surface, and subreflector 4 is penetrated face for pair.Therefore the feedback type antenna also can be called dual reflector antenna.
Be illustrated in figure 3 as the profile of a kind of dual reflector antenna of prior art.For subreflector is fixed, dual reflector antenna shown in Figure 3 is on the basis of antenna structure shown in Figure 2, adopt metallic support rod 6, by metallic support rod 6 being installed in parabolic reflector 5 upper support subreflectors 4, subreflector 4 is fixed on parabolic reflector 5 tops.For example can adopt four metallic support rod 6 usually.Be illustrated in figure 4 as the profile of the another kind of dual reflector antenna of prior art.As shown in Figure 4, dual reflector antenna shown in Figure 4 is on the basis of antenna structure shown in Figure 2, has adopted dielectric support bar 7, by dielectric support bar 7 being connected feed 3 tops, is positioned at the subreflector 4 of dielectric support bar 7 tops with support.As shown in Figure 4, a radome 8 can also be set above parabolic reflector 5.
There are the following problems at least in the prior art: the dual reflector antenna of prior art shown in Figure 3, the metallic support pole pair antenna aperture of employing forms and blocks, and causes the lifting of secondary lobe, influences antenna efficiency.The dual reflector antenna of prior art shown in Figure 4 has adopted the dielectric support bar on electrical property, and the introducing of medium causes loss, influences antenna efficiency.And existing two kinds of dual reflector antennas, metallic support rod 6 or dielectric support bar 7 installation accuracies are had relatively high expectations, if being installed, nonstandard meeting cause the operating efficiency of hyperboloid antenna to reduce.
The utility model content
The utility model embodiment provides a kind of dual reflector antenna, causes the lower defective of operating efficiency of antenna in order to dual reflector antenna structure in the solution prior art.
The utility model embodiment provides a kind of dual reflector antenna, comprises feed, primary reflection surface and radome, and described feed is positioned at the center of described primary reflection surface, and described radome is arranged on the top of described primary reflection surface; Central area at described radome is provided with subreflector; The virtual focus of described subreflector and the real focus of described primary reflection surface coincide.
Above-mentioned described dual reflector antenna, wherein said subreflector and described becoming one of radome structure.
Above-mentioned described dual reflector antenna, wherein said subreflector comprises parabolic substrate, and the layer of metal powder that sprays on the direction of feed in described parabolic substrate.
Above-mentioned described dual reflector antenna, the center conllinear of the center of wherein said primary reflection surface, the center of described subreflector and described feed.
Above-mentioned described dual reflector antenna, wherein said primary reflection surface and described subreflector are parabola, the hyperboloid of revolution or ellipsoid.
The dual reflector antenna of the utility model embodiment, by central area subreflector is set at radome, between feed and subreflector, do not have and block, can reduce the loss of transmission, improve the operating efficiency of hyperboloid antenna, and the dual reflector antenna of the utility model embodiment, simple in structure.Compared with prior art, save the installation of metallic support rod or dielectric support bar, fitting operation is more prone to, and repair demolition is very convenient.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the profile of feed forward type antenna of the prior art.
Fig. 2 is the profile of feedback type antenna of the prior art.
Fig. 3 is the profile of a kind of dual reflector antenna of prior art.
Fig. 4 is the profile of the another kind of dual reflector antenna of prior art.
The profile of the dual reflector antenna that Fig. 5 provides for the utility model embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The profile of the dual reflector antenna that Fig. 5 provides for the utility model embodiment.As shown in Figure 5, the dual reflector antenna of present embodiment comprises feed 10, primary reflection surface 11 and radome 12, and wherein feed 10 is positioned at the center of primary reflection surface 11, and radome 12 is arranged on the top of primary reflection surface 11; Be provided with subreflector 13 in the central area of radome 12; The real focus of the virtual focus of subreflector 13 and primary reflection surface 11 coincides.Wherein primary reflection surface 11 and subreflector 13 all can be shapes such as parabola, the hyperboloid of revolution or ellipsoid, as long as the virtual focus of subreflector 13 and the real focus of primary reflection surface 13 coincide.
The use of the dual reflector antenna of present embodiment is as follows: microwave signal enters feed 10 from the input 9 of dual reflector antenna, microwave signal is radiate by its open bore face 101 by feed 10.Microwave signal is transferred to the subreflector 13 of radome 12 central areas, because the virtual focus of subreflector 13 overlaps at position A place (A place, position also is the real focus of primary reflection surface 11 simultaneously) with the phase center of feed 10, microwave signal is transferred to primary reflection surface 11 through primary event, because microwave signal is that the real focus from primary reflection surface 11 is that position A transmits, therefore microwave signal will reflect from primary reflection surface 11 with the form of plane wave, is not gone out by the partial radiation that subreflector blocks through radome 12.
The dual reflector antenna of present embodiment is provided with subreflector by the central area at radome, does not have between feed and subreflector and blocks, can reduce the loss of transmission, improve the operating efficiency of hyperboloid antenna, and the dual reflector antenna of present embodiment, simple in structure.Compared with prior art, save the installation of metallic support rod or dielectric support bar, fitting operation is more prone to, and repair demolition is very convenient.
Need to prove, on the basis of technique scheme, wherein when the central area of radome 12 is provided with subreflector 13, can be directly to radome 12 figurations, to form the subreflector 13 of parabolic shape in the central area of radome 12, promptly subreflector 13 and radome 12 can be integrated.
Need to prove that on the basis of technique scheme, subreflector 13 can be separate structure with radome 12, is arranged on the radome 12.For example subreflector 13 can comprise parabolic substrate, and at the layer of metal powder that on the direction of feed 10, sprays in the parabolic substrate, thereby form subreflector 13.
Need to prove, as shown in Figure 5, the dual reflector antenna of the foregoing description is when installing and using, and the center 121 of the center of primary reflection surface (in the position of input 9), subreflector and the center of feed (for example bell-mouthed center) will remain on the same straight line.
Adopt the technical scheme of the foregoing description, do not have between the feed of dual reflector antenna and the subreflector and block, can reduce loss effectively, and the dual reflector antenna of present embodiment is simple in structure, repair demolition is convenient.In addition, the dual reflector antenna of present embodiment realizes having higher realizability easily on technology.And the subreflector of the dual reflector antenna of present embodiment can with the radome integrated design, can reduce the manufacturing materials of antenna, reduce the cost of making dual reflector antenna.
It should be noted that at last: above embodiment only in order to the explanation the technical solution of the utility model, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (5)
1. a dual reflector antenna comprises feed, primary reflection surface and radome, and described feed is positioned at the center of described primary reflection surface, and described radome is arranged on the top of described primary reflection surface; It is characterized in that, be provided with subreflector in the central area of described radome; The virtual focus of described subreflector and the real focus of described primary reflection surface coincide.
2. dual reflector antenna according to claim 1 is characterized in that, described subreflector and described becoming one of radome structure.
3. dual reflector antenna according to claim 1 is characterized in that described subreflector comprises parabolic substrate, and the layer of metal powder that sprays on the direction of feed in described parabolic substrate.
4. according to the arbitrary described dual reflector antenna of claim 1-3, it is characterized in that the center conllinear of the center of described primary reflection surface, the center of described subreflector and described feed.
5. according to the arbitrary described dual reflector antenna of claim 1-3, it is characterized in that described primary reflection surface and described subreflector are parabola, the hyperboloid of revolution or ellipsoid.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120045781 CN202042599U (en) | 2011-02-21 | 2011-02-21 | Double reflector antenna |
| PCT/CN2012/071077 WO2012113293A1 (en) | 2011-02-21 | 2012-02-13 | Dual reflector antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120045781 CN202042599U (en) | 2011-02-21 | 2011-02-21 | Double reflector antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202042599U true CN202042599U (en) | 2011-11-16 |
Family
ID=44970025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120045781 Expired - Fee Related CN202042599U (en) | 2011-02-21 | 2011-02-21 | Double reflector antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202042599U (en) |
| WO (1) | WO2012113293A1 (en) |
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| CN102570050A (en) * | 2011-12-19 | 2012-07-11 | 西安普天天线有限公司 | Microwave parabolic antenna with long-focus feedback super-high performance |
| WO2012113293A1 (en) * | 2011-02-21 | 2012-08-30 | 华为技术有限公司 | Dual reflector antenna |
| CN102820550A (en) * | 2012-07-31 | 2012-12-12 | 深圳光启创新技术有限公司 | Microwave antenna with metal elliptical surface and elliptical-like metal metamaterial as sub-reflecting surfaces |
| CN103682661A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682671A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682669A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682663A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682665A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682666A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682662A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN103682664A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Metamaterial microwave antenna |
| CN104813538A (en) * | 2012-10-25 | 2015-07-29 | 新生组织网络有限公司 | Reflector arrangement for attachment to a wireless communications terminal |
| CN105006659A (en) * | 2014-04-25 | 2015-10-28 | 泰勒斯公司 | Assembly of two dual-reflector antennas and satellite comprising the same |
| CN106129639A (en) * | 2016-08-09 | 2016-11-16 | 苏州市吴通天线有限公司 | Small capacity double polarization high isolation foldable antenna |
| CN107004940A (en) * | 2014-10-10 | 2017-08-01 | 新生组织网络有限公司 | Wideband antenna system based on paster antenna |
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| DE422313C (en) * | 1921-06-14 | 1925-11-28 | Rieri Werk Elisabeth Richter | Process for the production and use of an adsorbent for the purification of alcohols and oils |
| US6184840B1 (en) * | 2000-03-01 | 2001-02-06 | Smartant Telecomm Co., Ltd. | Parabolic reflector antenna |
| CN2408577Y (en) * | 2000-03-02 | 2000-11-29 | 寰波科技股份有限公司 | Parabolic reflector antenna |
| WO2003090384A1 (en) * | 2002-04-19 | 2003-10-30 | Imego Ab | An arrangement for transmitting and/or receiving electromagnetic signals |
| RU2296397C2 (en) * | 2005-05-31 | 2007-03-27 | Джи-хо Ан | Antenna-feeder assembly and antenna incorporated in this assembly |
| CN202042599U (en) * | 2011-02-21 | 2011-11-16 | 华为技术有限公司 | Double reflector antenna |
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- 2011-02-21 CN CN 201120045781 patent/CN202042599U/en not_active Expired - Fee Related
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- 2012-02-13 WO PCT/CN2012/071077 patent/WO2012113293A1/en active Application Filing
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2012113293A1 (en) | 2012-08-30 |
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