CN202817172U - High temperature resistant Ka-band wide beam receiving and transmitting antenna - Google Patents
High temperature resistant Ka-band wide beam receiving and transmitting antenna Download PDFInfo
- Publication number
- CN202817172U CN202817172U CN 201220496956 CN201220496956U CN202817172U CN 202817172 U CN202817172 U CN 202817172U CN 201220496956 CN201220496956 CN 201220496956 CN 201220496956 U CN201220496956 U CN 201220496956U CN 202817172 U CN202817172 U CN 202817172U
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- circular waveguide
- antenna
- high temperature
- temperature resistant
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Abstract
The utility model relates to a high temperature resistant Ka-band wide beam receiving and transmitting antenna. The high temperature resistant Ka-band wide beam receiving and transmitting antenna comprises an antenna body, an antenna window for covering the antenna body, and a first circular waveguide and a second circular waveguide which are arranged in the antenna body, wherein the first circular waveguide is used for receiving high-frequency signals and the second circular waveguide is used for transmitting low-frequency signals. The upper port of the first circular waveguide is a first circular waveguide opening, the upper port of the second circular waveguide is a second circular waveguide opening, the horizontal height of the first circular waveguide opening is the same as the horizontal height of the second circular waveguide opening; three circles of metal choke grooves are arranged around each of the first circular waveguide opening and the second circular waveguide opening respectively, wherein the heights of the choke grooves are lower than the radiating surfaces of the circular waveguide openings by 3mm. The high temperature resistant Ka-band wide beam receiving and transmitting antenna of the utility model has the advantage of stable performance in a certain high temperature condition, and a wide beam Ka antenna having advantages of receiving-transmitting sharing, common receiving-transmitting and high receiving and transmitting port isolation is realized in the condition of a fixed small-size antenna window.
Description
Technical field
The utility model relates to a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna, particularly relates to a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna that the various requirement antenna has the relevant national defence fields such as broad beam, the Ka frequency range remote measurement of transmitting-receiving port high-isolation, outer survey, control, communication that can be used for.
Background technology
Along with the development of Aero-Space observation and control technology and various super speed vehicle development, the use of Ka frequency range various device is increasingly extensive.For satisfying certain ultrahigh speed glide vehicle model demand, development Ka frequency range Missile-borne Antenna.Specific requirement is: the Ka Missile-borne Antenna is installed under the super thick solar heat protection antenna windows in flying body surface, owing to aircraft glides for a long time in the endoatmosphere, thus require antenna itself can bear certain high temperature, and have some strength.Antenna is linear polarization, the broad beam gain pattern.Antenna can be finished the function of Ka emission and Ka reception simultaneously, transmits and receives and all works in the Ka frequency range.The transmitting-receiving port shares an antenna windows, has higher isolation between two ports.The working band of emission port is f
1± 150MHz, the working band of receiving port are f
2± 150MHz.
Antenna mostly is L ~ C frequency range on traditional bullet in the past, time development headed by the antenna on the Ka frequency range bullet.Microstrip antenna is the modal pattern of antenna on the bullet, but because Ka frequency range microwave equipment electric wave is long very short, only have about 10mm, if use little band then because antenna size is too small, be not easy to processing, and the problems such as the surface wave of high band microstrip antenna and medium substrate loss can cause energy loss serious, and radiation efficiency is not high, can't satisfy user demand.Require antenna to have certain structural strength, and under higher temperature (200 ℃) temperature, can work, thus the material of antenna own under the condition of high temperature, electrical characteristics and architectural characteristic are stablized.As the aircraft antenna, require antenna size as far as possible little.Simultaneously, Ka frequency range equipment is higher to requirement on machining accuracy, so antenna pattern itself is not high to requirement on machining accuracy.
Therefore need badly a kind of novel high temperature resistant Ka frequency range broad beam dual-mode antenna is provided.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of on the high-speed aircraft carrier, under fixing small size antenna window condition, realizes the high temperature resistant Ka frequency range broad beam dual-mode antenna of a kind of transmit-receive sharing, high-isolation.
For solving the problems of the technologies described above, a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna of the utility model comprises antenna body, covers in antenna windows on the antenna body, is arranged at the first circular waveguide of the reception high frequency among the antenna body and the second circular waveguide of emission low frequency; The upper port of the first circular waveguide is the first circular waveguide opening, and the upper port of the second circular waveguide is the second circular waveguide opening, and the first circular waveguide opening is consistent with the level height of the second circular waveguide opening; The first circular waveguide opening and the second circular waveguide around openings respectively are provided with 3 circle metal choke grooves, and choke groove is than the low 3mm of circular waveguide opening radiating surface.
The antenna body lower surface is provided with the moment round transition sheet, the lower port of corresponding the first circular waveguide and the second circular waveguide is respectively equipped with the two-part shoulder hole on the moment round transition sheet, the hole section of shoulder hole next-door neighbour circular waveguide is oval changeover portion, and another hole section of shoulder hole is the rectangular transition section with lead angle.
The long limit of the rectangle of two rectangular transition section is orthogonal.
The thickness of moment round transition sheet is 4.8mm.
Keep a determining deviation between circular waveguide opening radiating surface and the antenna windows lower surface.。
The whole processing of the first circular waveguide, the second circular waveguide and choke groove is on the antenna body of same metal.
The utility model adopts the open circles radiating guide as the Ka antenna body.This type antenna this as the broad beam directional diagram, and not high to requirement on machining accuracy.The circular waveguide of two different sizes is corresponding to be received and the emission corresponding frequencies.According to the size of frequency computation part antenna wave guide mouth, make the circular waveguide mouth can guarantee single mode transport, can reach again beamwidth and maximum gain requirement.
The utility model increases by 3 circle choke grooves at waveguide antenna mouth place, control many phase mutual interference between the totally one antenna different port, increases isolation.
Choke of the present utility model is lower than waveguide antenna mouth 3mm, but reflecting part waveguide mouth emittance is optimized low elevation direction figure, increases beamwidth.Be provided with the air gap between waveguide mouth and the solar heat protection antenna windows lower surface, formed air chamber, be optimized with further broadening directional diagram.
Antenna feed mouth of the present utility model is rectangular waveguide BJ260, adopts the moment round transition form to realize that rectangular waveguide is to the pattern conversion of circular waveguide.For reducing antenna size and weight, adopted step moment round transition coupling sheet to replace traditional moment round transition section.The about 4.8mm of moment round transition sheet thickness is significantly smaller than the length of conventional transition section 50mm.The long limit of the rectangle of the rectangular waveguide of two ports of antenna is orthogonal direction, has guaranteed two antenna polarization quadratures, has increased interport isolation.
The circular waveguide of the utility model reception, transmitting antenna and choke groove carry out integral body processing on same metal structure, as antenna body, to improve the reliability of product.Whole antenna is the simple metal structure, under certain condition of high temperature, and metal structure performance and electric performance stablity.Can satisfy antenna structure intensity and resistant to elevated temperatures requirement.The antenna different piece is installed, antenna being connected between the installation on the body, antenna current feed port and feed waveguide all adopt the screw mode, has improved the reliability of whole antenna feeder.
Antenna is tested and tested: the standing wave bandwidth of antenna reception, emission port is all greater than 400MHz.Antenna is linear polarization, two-port polarised direction quadrature, and isolation is greater than 50dB.Two port direction figure consistency are better, all can satisfy the requirement of broad beam directional diagram, and the directional diagram test result is: maximum gain is not less than 4dB in the antenna normal direction, and normal ± 60 a ° scope internal antenna gain is not less than 0dB.
Description of drawings
Fig. 1 is antenna and antenna windows schematic diagram.
Fig. 2 is the antenna cutaway view.
Fig. 3 is the antenna vertical view.
Fig. 4 is the waveguide match map.
Among the figure: 1 is the circular waveguide opening, and 2 is choke groove, and 3 is the moment round transition sheet, 4 is antenna moment round transition screw hole, and 5 is the first circular waveguide opening, and 6 is the second circular waveguide opening, 7 is antenna mounting flange screw hole, and 8 is the antenna mounting flange, and 9 is the first moment round transition sheet, 10 is the second moment round transition sheet, and 11 is the first circular waveguide interface, and 12 is the second circular waveguide interface, 13 is antenna body, and 14 is the air gap, and 15 is BJ260 waveguide screw hole, 16 is BJ260 waveguide alignment pin, and 17 is antenna windows.
Embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
The utility model utilizes open circles radiating guide with choke groove as the Ka antenna scheme, selects the circular waveguide of suitable dimension as the major part of open circles radiating guide, can guarantee single mode transport, can reach again beamwidth and maximum gain requirement.Simultaneously, radiating guide is convenient to processing, and existing process technology can satisfy the antenna precision requirement.Choke groove is used for the broadening wave beam and controls many phase mutual interference between the totally one antenna different port, increases isolation.The circular waveguide radiation actinal surface of choke groove ratio antenna is lower slightly, can reflect the energy of waveguide mouth radiation; Waveguide mouth radiating surface and and the solar heat protection antenna windows between certain distance is arranged, form air chamber, to optimize directional diagram.Antenna adopts rectangular waveguide BJ260 feed, adopts the moment round transition form to realize that rectangular waveguide is to the pattern conversion of circular waveguide.For reducing antenna size and weight, adopted step moment round transition coupling sheet to replace traditional moment round transition section.Whole antenna is the simple metal structure, and structural strength is better, under hot environment, and stability of characteristics.
Specifically, the utility model comprises antenna body 13, covers in antenna windows 17 on the antenna body 13, is arranged at the first circular waveguide of the reception high frequency among the antenna body 13 and the second circular waveguide of emission low frequency; The upper port of the first circular waveguide is that the upper port of the first circular waveguide opening 5, the second circular waveguides is that the second circular waveguide opening 6, the first circular waveguide openings 5 are consistent with the level height of the second circular waveguide opening 6; Respectively be provided with 3 circle metal choke grooves 2 around the first circular waveguide opening 5 and the second circular waveguide opening 6, choke groove 2 is than the low 3mm of circular waveguide opening 1 radiating surface.The first circular waveguide, the second circular waveguide and choke groove 2 whole processing are on the antenna body 13 of same metal.
The antenna feed end is BJ260 rectangular waveguide mouth.Antenna body 13 lower surfaces are provided with the first moment round transition sheet 9 and the second moment round transition sheet 10, the lower port of corresponding the first circular waveguide is provided with the two-part shoulder hole on the first moment round transition sheet 9, the lower port of corresponding the second circular waveguide is provided with the two-part shoulder hole on the second moment round transition sheet 10, the hole section of shoulder hole next-door neighbour circular waveguide is oval changeover portion, and another hole section of shoulder hole is the rectangular transition section with lead angle.The thickness of moment round transition sheet 3 is 4.8mm, compares in traditional changeover portion, and length has reduced greatly.The long limit of the rectangle of two rectangular transition section is orthogonal, makes two antenna polarization quadratures, has improved interport isolation.
Keep a determining deviation between circular waveguide opening 1 radiating surface and antenna windows 17 lower surfaces.When carrying out 8 design of antenna mounting flange, need to together carry out global design with antenna windows 17, to guarantee the air gap 14 between antenna windows 17 and the antenna.
Moment round transition sheet 3 and antenna body 13 are installed by screw, at moment round transition sheet 3 antenna moment round transition screw hole 4 are arranged; Simultaneously, be threaded connection the BJ260 feed waveguide, at moment round transition sheet 3 BJ260 waveguide screw hole 15 and BJ260 waveguide alignment pin 16 arranged, to guarantee accurately being located by connecting between antenna and the feed waveguide.
Claims (6)
1. high temperature resistant Ka frequency range broad beam dual-mode antenna comprises antenna body, covers in antenna windows on the described antenna body, is arranged at the first circular waveguide of the reception high frequency among the described antenna body and the second circular waveguide of emission low frequency; The upper port of described the first circular waveguide is the first circular waveguide opening, and the upper port of described the second circular waveguide is the second circular waveguide opening, and described the first circular waveguide opening is consistent with the level height of the second circular waveguide opening; It is characterized in that: described the first circular waveguide opening and the second circular waveguide around openings respectively are provided with 3 circle metal choke grooves, and described choke groove is than the low 3mm of circular waveguide opening radiating surface.
2. a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna according to claim 1, it is characterized in that: described antenna body lower surface is provided with the moment round transition sheet, the lower port of corresponding the first circular waveguide and the second circular waveguide is respectively equipped with the two-part shoulder hole on the described moment round transition sheet, the hole section of described shoulder hole next-door neighbour circular waveguide is oval changeover portion, and another hole section of described shoulder hole is the rectangular transition section with lead angle.
3. a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna according to claim 2 is characterized in that: the long limit of the rectangle of described two rectangular transition section is orthogonal.
4. a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna according to claim 2, it is characterized in that: the thickness of described moment round transition sheet is 4.8mm.
5. a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna according to claim 1 is characterized in that: keep a determining deviation between described circular waveguide opening radiating surface and the antenna windows lower surface.
6. a kind of high temperature resistant Ka frequency range broad beam dual-mode antenna according to claim 1 is characterized in that: the whole processing of described the first circular waveguide, the second circular waveguide and choke groove is on the antenna body of same metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496956 CN202817172U (en) | 2012-09-26 | 2012-09-26 | High temperature resistant Ka-band wide beam receiving and transmitting antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220496956 CN202817172U (en) | 2012-09-26 | 2012-09-26 | High temperature resistant Ka-band wide beam receiving and transmitting antenna |
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| Publication Number | Publication Date |
|---|---|
| CN202817172U true CN202817172U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220496956 Expired - Lifetime CN202817172U (en) | 2012-09-26 | 2012-09-26 | High temperature resistant Ka-band wide beam receiving and transmitting antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048073A (en) * | 2015-08-04 | 2015-11-11 | 北京航天长征飞行器研究所 | C-frequency band directional diagram forming coupling heat antenna |
| CN106450704A (en) * | 2016-11-29 | 2017-02-22 | 航天恒星科技有限公司 | High-contact-ratio gain directional diagram circularly polarized antenna |
| CN106571521A (en) * | 2016-10-31 | 2017-04-19 | 上海无线电设备研究所 | High temperature resistance antenna |
-
2012
- 2012-09-26 CN CN 201220496956 patent/CN202817172U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105048073A (en) * | 2015-08-04 | 2015-11-11 | 北京航天长征飞行器研究所 | C-frequency band directional diagram forming coupling heat antenna |
| CN105048073B (en) * | 2015-08-04 | 2018-02-09 | 北京航天长征飞行器研究所 | A kind of C frequency ranges directional diagram figuration couples thermal antenna |
| CN106571521A (en) * | 2016-10-31 | 2017-04-19 | 上海无线电设备研究所 | High temperature resistance antenna |
| CN106571521B (en) * | 2016-10-31 | 2019-06-14 | 上海无线电设备研究所 | A kind of high temperature resistant antenna |
| CN106450704A (en) * | 2016-11-29 | 2017-02-22 | 航天恒星科技有限公司 | High-contact-ratio gain directional diagram circularly polarized antenna |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |