CN104183924A - Onboard satellite communication antenna with low profile - Google Patents
Onboard satellite communication antenna with low profile Download PDFInfo
- Publication number
- CN104183924A CN104183924A CN201410415746.9A CN201410415746A CN104183924A CN 104183924 A CN104183924 A CN 104183924A CN 201410415746 A CN201410415746 A CN 201410415746A CN 104183924 A CN104183924 A CN 104183924A
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- Prior art keywords
- antenna
- satellite communication
- reflection surface
- foaming body
- application
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Abstract
The invention discloses an onboard satellite communication antenna with a low profile. The antenna comprises a primary reflection surface, an auxiliary reflection surface, a feed source system and a foam body, wherein the auxiliary reflection surface is connected with the feed source system through the foam body, the feed source system is connected with the primary reflection surface, the feed source system comprises a feed source loudspeaker and a waveguide pipe, the foam body is connected with one end of the feed source loudspeaker through threads, and the waveguide pipe is connected with the other end of the feed source loudspeaker. The foam body has a low dielectric constant. Figurative design is carried out on the primary reflection surface and the auxiliary reflection surface of the antenna, efficiency of the antenna is greatly improved, the auxiliary reflection surface is designed to be small, shielded portions of the auxiliary reflection surface are reduced and efficiency of the antenna is improved.
Description
Technical field
The application relates to satellite communication field, and a kind of low section high-performance boat-carrying satellite communication antena is specifically specially adapted to the satellite communication antena of mobile boat-carrying.
Background technology
Satellite communication is the important achievement of modern communication technology, is also the key areas of space technology application.It has that area coverage is large, bandwidth, capacity are large, be applicable to multiple business, stable and reliable for performance, maneuverability, be not subject to the advantages such as geographical conditions restriction, cost and communication distance have nothing to do.For many years, it is widely applied in fields such as international communication, home communications, national defense communication, mobile communication and radio and television.
The core of boat-carrying communication in moving is boat-carrying satellite communication antena and tracking system, i.e. so-called boat-carrying " communication in moving " satellite communication antena system.At present, it is maximum that boat-carrying satellite communication antena is used is ring-focus antenna, its advantage is that the voltage standing wave ratio of antenna is extremely low, near in sidelobe characteristic better, blocking of feed be less than blocking of minor face etc.
In design process, in order to improve the near in sidelobe characteristic of antenna, minor face diameter design comparison is large.But minor face is larger, blocking of minor face is larger, and the efficiency of antenna is lower.In addition, between feed and minor face, with four metallic supports, connect, support can bring and block, and worsens antenna near in sidelobe performance.
Application number is that the patent of 201310059708.X discloses a kind of high efficiency medium and leads parabolic antenna, what this antenna was mainly realized is the reception of signal, and not responsible transmission, and the selection of leading due to medium and the design of medium, medium is led and stretched into waveguide, cause its frequency narrower, gain lower.
Summary of the invention
In order to solve the problem of above-mentioned existence, the application discloses a kind of low section high-performance boat-carrying satellite communication antena, wherein mainly the primary reflection surface of antenna, subreflector are carried out to Shape design, greatly improved the efficiency of antenna, that subreflector is designed is very little simultaneously, reduced, to the blocking of subreflector, to have improved the efficiency of antenna.
The application adopts following technical scheme:
A low section boat-carrying satellite communication antena, comprising: primary reflection surface, subreflector, and feed system, foaming body, wherein, described subreflector is connected with feed system by foaming body, and feed system is connected on primary reflection surface.
Described in the application, feed system comprises Feed Horn and waveguide, and foaming body is threaded connection the one end in Feed Horn, and waveguide is connected in the other end of Feed Horn.
Described in the application, foaming body adopts low-k foaming body.
Described in the application, the density of foaming body is 50g/cm
3-70g/cm
3.
Described in the application, the density of foaming body is 60g/cm
3.
Described in the application, be positioned at Feed Horn junction and offer boss and groove on described waveguide, the distance between boss and groove is 1/16 λ.
Described in the application, the degree of depth of waveguide groove is 1/10 λ, and width is 1/11 λ.
Described in the application, the height of waveguide boss is 1/16 λ, and width is 1/11 λ.
The application adopts technique scheme, has following technique effect:
The application carries out greatly having improved after Shape design the efficiency of antenna to the primary reflection surface of antenna, subreflector, very little subreflector design simultaneously reduced, to the blocking of subreflector, to have improved the efficiency of antenna.
In order to reach high-gain, high efficiency, low noise and to meet the performance requirement to wide angle sidelobe level and cross polarization isolation, described in the application, to have adopted method of geometrical optics be subreflector Snell theorem, primary reflection surface Snell theorem and principle of conservation of energy to antenna synthesis, designs the curve of antenna main reflector and subreflector.The application has adopted brace type feed, between feed and minor face, adopted the foaming body of low-k to support, and has avoided using that metallic support brings the unfavorable factor such as blocks.
The about 345mm of antenna total height described in the application, section is lower.Antenna structure is simple, is easy to processing and installs.
Described in the application, connection of antenna receiving end antenna gain is about 41.0dBi, and transmitting terminal antenna gain is about 42.0dBi, and antenna efficiency is higher.
Accompanying drawing explanation
Fig. 1 is the application's structural representation;
Fig. 2 is the application's subreflector and feed top feature schematic diagram;
Fig. 3 is that the application's antenna is receiving terminal antenna pattern under 12.25GHz in frequency;
Fig. 4 is that the application's antenna is receiving terminal antenna pattern under 12.5GHz in frequency;
Fig. 5 is that the application's antenna is receiving terminal antenna pattern under 12.75GHz in frequency;
Fig. 6 is that the application's antenna is under 14GHz, to connect transmitting terminal antenna pattern in frequency;
Fig. 7 is that the application's antenna is under 14.25GHz, to connect transmitting terminal antenna pattern in frequency;
Fig. 8 is that the application's antenna is under 14.5GHz, to connect transmitting terminal antenna pattern in frequency;
In figure: 1-feed system, 2-primary reflection surface, 3-foaming body, 4-subreflector, 5-Feed Horn, 6-waveguide.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the application.
As shown in Figure 1, a kind of low section boat-carrying satellite communication antena, comprising: primary reflection surface 2, and subreflector 4, feed system 1, foaming body 3, described subreflector 4 is connected with feed system 1 by foaming body 3, and feed system 1 is directly connected on primary reflection surface 2.Antenna main reflector 2 diameters are Dm=1 rice, subreflector 4 diameter Ds=35.6mm, Ds/Dm < 0.1, smaller compared with other similar day wire antenna minor faces, so minor face block smaller.Antenna efficiency is higher; The about 345mm of antenna total height, section is lower.Antenna structure is simple, is easy to processing and installs.
As shown in Figure 2, as a kind of improvement of the application, described foaming body 3 is threaded connection in Feed Horn 5 one end, and waveguide 6 is connected in the other end of Feed Horn 5.After adopting this design, being threaded can be so that stable connection between subreflector 4 and feed system 1, thereby there will not be position skew to have influence on signal.
Further, as a kind of improvement of the application, described foaming body 3 adopts low-k foaming body.After adopting this design, low-k foaming body can be so that stable connection between subreflector 4 and feed system 1, due to the self character of low-k foaming body, causes it can not affect signal transmission.
As a kind of improvement to the application, as a kind of improvement of the application, the density of described foaming body 3 is at 50g/cm
3to 70g/cm
3.After adopting this design, the density of its foaming body 3 can reach the effect of support, and does not affect signal strength signal intensity and the signal transmission of microwave signal.
Preferably, the density of described foaming body 3 is: 60g/cm
3, through test, adopt the foaming physical efficiency of this density to produce best support effect, do not affect the signal strength signal intensity of microwave yet.
As a kind of improvement of the application, on described waveguide 6, be positioned at Feed Horn 5 junctions and offer boss and groove, the distance between boss and groove is 1/16 λ.Design groove and boss, can optimize antenna standing wave ratio by boss and groove.
Preferably, the degree of depth of described groove is 1/10 λ, and width is 1/11 λ.
Preferably, the height of described boss is 1/16 λ, and width is 1/11 λ, and after adopting this design, the degree of depth of adjusting grooves and width, regulate height and the width of boss can effectively optimize antenna standing wave ratio.
The antenna that adopts the above technical scheme of the application to obtain can finely be realized the transmitting-receiving of data.
As Fig. 3-8 show the application's antenna receiving-sending end antenna pattern, gain, cross polarization, the relation of antenna pattern and envelope:
As shown in Figure 3, in frequency, be that under 12.25GHz, receiving terminal gain can reach 40.845dBi.
As shown in Figure 4, in frequency, be that under 12.5GHz, receiving terminal gain can reach 40.5261dBi.
As shown in Figure 5, in frequency, be that under 12.75GHz, receiving terminal gain can reach 41.016dBi.
As shown in Figure 6, in frequency, be that under 14GHz, transmitting terminal gain can reach 41.8217dBi.
As shown in Figure 7, in frequency, be that under 14.25GHz, transmitting terminal gain can reach 42.0315dBi.
As shown in Figure 8, in frequency, be that under 14.5GHz, transmitting terminal gain can reach 42.3506dBi.
Take the above-mentioned desirable embodiment according to the application as enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this application technological thought, carry out various change and modification completely.The application's protection range is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being comprised of above technical characterictic combination in any.
Claims (8)
1. one kind low section boat-carrying satellite communication antena, it is characterized in that, comprise: primary reflection surface (2), subreflector (4), feed system (1), foaming body (3), wherein, described subreflector (4) is connected with feed system (1) by foaming body (3), and feed system (1) is connected on primary reflection surface (2).
2. a kind of low section boat-carrying satellite communication antena according to claim 1, it is characterized in that, described feed system (1) comprises Feed Horn (5) and waveguide (6), foaming body (3) is threaded connection in one end of Feed Horn (5), and waveguide (6) is connected in the other end of Feed Horn (5).
3. a kind of low section boat-carrying satellite communication antena according to claim 2, is characterized in that, is positioned at Feed Horn (5) junction and offers boss and groove on described waveguide (6), and the distance between boss and groove is 1/16 λ.
4. a kind of low section boat-carrying satellite communication antena according to claim 1, is characterized in that, described foaming body (3) adopts low-k foaming body.
5. a kind of low section boat-carrying satellite communication antena according to claim 1, is characterized in that, the density of described foaming body (3) is 50g/cm
3-70g/cm
3.
6. a kind of low section boat-carrying satellite communication antena according to claim 5, is characterized in that, the density of described foaming body (3) is 60g/cm
3.
7. a kind of low section boat-carrying satellite communication antena according to claim 3, is characterized in that, the degree of depth of described waveguide (6) groove is 1/10 λ, and width is 1/11 λ.
8. a kind of low section boat-carrying satellite communication antena according to claim 3, is characterized in that, the height of described waveguide (6) boss is 1/16 λ, and width is 1/11 λ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410415746.9A CN104183924A (en) | 2014-08-22 | 2014-08-22 | Onboard satellite communication antenna with low profile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410415746.9A CN104183924A (en) | 2014-08-22 | 2014-08-22 | Onboard satellite communication antenna with low profile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104183924A true CN104183924A (en) | 2014-12-03 |
Family
ID=51964793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410415746.9A Withdrawn CN104183924A (en) | 2014-08-22 | 2014-08-22 | Onboard satellite communication antenna with low profile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104183924A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161827A (en) * | 2015-08-20 | 2015-12-16 | 南京中网卫星通信股份有限公司 | Low-profile and high-performance ring-focus satellite communication antenna |
| 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 |
| CN113078471A (en) * | 2020-01-03 | 2021-07-06 | 南京大学 | Reflecting surface sum-difference network antenna |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383451A (en) * | 2008-05-28 | 2009-03-11 | 广东盛路通信科技股份有限公司 | Microwave feeding source of ultra-high performance antenna |
| CN102255137A (en) * | 2011-04-25 | 2011-11-23 | 重庆邮电大学 | Variable-frequency microstrip antenna |
| CN103247864A (en) * | 2013-05-10 | 2013-08-14 | 中国电子科技集团公司第五十四研究所 | High-precision spinning antenna reflecting surface and manufacturing method thereof |
| CN204118269U (en) * | 2014-08-22 | 2015-01-21 | 南京中网卫星通信股份有限公司 | A kind of low section boat-carrying satellite communication antena |
-
2014
- 2014-08-22 CN CN201410415746.9A patent/CN104183924A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101383451A (en) * | 2008-05-28 | 2009-03-11 | 广东盛路通信科技股份有限公司 | Microwave feeding source of ultra-high performance antenna |
| CN102255137A (en) * | 2011-04-25 | 2011-11-23 | 重庆邮电大学 | Variable-frequency microstrip antenna |
| CN103247864A (en) * | 2013-05-10 | 2013-08-14 | 中国电子科技集团公司第五十四研究所 | High-precision spinning antenna reflecting surface and manufacturing method thereof |
| CN204118269U (en) * | 2014-08-22 | 2015-01-21 | 南京中网卫星通信股份有限公司 | A kind of low section boat-carrying satellite communication antena |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105161827A (en) * | 2015-08-20 | 2015-12-16 | 南京中网卫星通信股份有限公司 | Low-profile and high-performance ring-focus satellite communication antenna |
| 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 |
| CN113078471A (en) * | 2020-01-03 | 2021-07-06 | 南京大学 | Reflecting surface sum-difference network antenna |
| CN113078471B (en) * | 2020-01-03 | 2022-07-29 | 南京大学 | Reflecting surface sum-difference network antenna |
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| PB01 | Publication | ||
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Application publication date: 20141203 |