CN204118269U - A kind of low section boat-carrying satellite communication antena - Google Patents
A kind of low section boat-carrying satellite communication antena Download PDFInfo
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- CN204118269U CN204118269U CN201420475538.3U CN201420475538U CN204118269U CN 204118269 U CN204118269 U CN 204118269U CN 201420475538 U CN201420475538 U CN 201420475538U CN 204118269 U CN204118269 U CN 204118269U
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Abstract
This application discloses a kind of low section boat-carrying satellite communication antena, comprise: primary reflection surface, subreflector, feed system, foaming body, wherein, described subreflector is connected with feed system by foaming body, feed system is connected on primary reflection surface, described feed system comprises Feed Horn and waveguide, and foaming body is threaded connection the one end in Feed Horn, and waveguide is connected to the other end of Feed Horn.Described foaming body adopts low-k foaming body.The application mainly carries out Shape design to the major and minor face of antenna, substantially increases the efficiency of antenna, very little simultaneously minor face design, reduces blocking of minor face, improves the efficiency of antenna.
Description
Technical field
The application relates to satellite communication field, and specifically a kind of low section high-performance boat-carrying satellite communication antena, is 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 large, be applicable to multiple business, stable and reliable for performance, maneuverability, by geographical conditions restriction, cost and the advantage such as communication distance has 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, boat-carrying satellite communication antena use maximum be 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.
In the design process, in order to improve the near in sidelobe characteristic of antenna, minor face diameter design is larger.But minor face is larger, blocking of minor face is larger, and the efficiency of antenna is lower.In addition, connect with four metallic supports between feed and minor face, support can bring and block, and worsens antenna near in sidelobe performance.
Application number is that a kind of high efficiency medium that patent discloses of 201310059708.X leads parabolic antenna, the reception of what this antenna mainly realized is signal, and not responsible transmission, and the design of the selection to lead due to medium and medium, medium is led and stretches into waveguide, cause its frequency narrower, gain is lower.
Summary of the invention
In order to solve above-mentioned Problems existing, this application discloses a kind of low section high-performance boat-carrying satellite communication antena, wherein the main primary reflection surface to antenna, subreflector carry out Shape design, substantially increase the efficiency of antenna, very little simultaneously subreflector design, reduce blocking subreflector, improve the efficiency of antenna.
The application adopts following technical scheme:
A kind of low section boat-carrying satellite communication antena, comprising: primary reflection surface, subreflector, feed system, foaming body, wherein, described subreflector is connected with feed system by foaming body, and feed system is connected on primary reflection surface.
Feed system described in the application comprises Feed Horn and waveguide, and foaming body is threaded connection the one end in Feed Horn, and waveguide is connected to the other end of Feed Horn.
Foaming body described in the application adopts low-k foaming body.
The density of foaming body described in the application is 50g/cm
3-70g/cm
3.
The density of foaming body described in the application is 60g/cm
3.
Described waveguide described in the application is positioned at and offers boss and groove with Feed Horn junction, 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 substantially increases the efficiency of antenna to the primary reflection surface of antenna, subreflector after carrying out Shape design, very little simultaneously subreflector design, reduces blocking subreflector, improves the efficiency of antenna.
In order to reach high-gain, high efficiency, low noise the performance requirement met wide angle sidelobe level and cross polarization isolation, antenna synthesis described in the application have employed method of geometrical optics and subreflector Snell theorem, primary reflection surface Snell theorem and principle of conservation of energy, designs the curve of antenna main reflector and subreflector.The application have employed brace type feed, and the foaming body that namely have employed low-k between feed and minor face supports, and avoids unfavorable factors such as using blocking of bringing of metallic support.
Described in the application, antenna total height is about 345mm, and section is lower.Antenna structure is simple, is easy to processing and installs.
Described in the application, antenna receiving terminal 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 structural representation of the application;
Fig. 2 is subreflector and the feed top feature schematic diagram of the application;
Fig. 3 is antenna receiving terminal antenna pattern under frequency is 12.25GHz of the application;
Fig. 4 is antenna receiving terminal antenna pattern under frequency is 12.5GHz of the application;
Fig. 5 is antenna receiving terminal antenna pattern under frequency is 12.75GHz of the application;
Fig. 6 is that the antenna of the application connects transmitting terminal antenna pattern under frequency is 14GHz;
Fig. 7 is that the antenna of the application connects transmitting terminal antenna pattern under frequency is 14.25GHz;
Fig. 8 is that the antenna of the application connects transmitting terminal antenna pattern under frequency is 14.5GHz;
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, illustrate the application further.
As shown in Figure 1, a kind of low section boat-carrying satellite communication antena, comprising: primary reflection surface 2, 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 connected directly between on primary reflection surface 2.Antenna main reflector 2 diameter is Dm=1 rice, subreflector 4 diameter Ds=35.6mm, Ds/Dm < 0.1, smaller compared with other similar antenna minor faces, therefore minor face block smaller.Antenna efficiency is higher; Antenna total height is about 345mm, and section is lower.Antenna structure is simple, is easy to processing and installs.
As shown in Figure 2, the one as the application is improved, and described foaming body 3 is threaded connection in Feed Horn 5 one end, and waveguide 6 is connected to the other end of Feed Horn 5.After adopting this design, be threaded and can make stable connection between subreflector 4 and feed system 1, there will not be position offset thus have influence on signal.
Further, the one as the application is improved, and described foaming body 3 adopts low-k foaming body.After adopting this design, low-k foaming body can make stable between subreflector 4 and feed system 1 connection, due to the self character of low-k foaming body, causes it to affect Signal transmissions.
Improve as to the one of the application, the one as the application is improved, and 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 transmissions 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, also do not affect the signal strength signal intensity of microwave.
One as the application is improved, and described waveguide 6 is positioned at and offers boss and groove with Feed Horn 5 junction, 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 the height of boss and width effectively can optimize antenna standing wave ratio.
The antenna adopting the above technical scheme of the application to obtain can realize the transmitting-receiving of data very well.
As Fig. 3-8 shows the application's antenna sending and receiving end antenna pattern, gain, cross polarization, the relation of antenna pattern and envelope:
As shown in Figure 3, under frequency is 12.25GHz, receiving terminal gain can reach 40.845dBi.
As shown in Figure 4, under frequency is 12.5GHz, receiving terminal gain can reach 40.5261dBi.
As shown in Figure 5, under frequency is 12.75GHz, receiving terminal gain can reach 41.016dBi.
As shown in Figure 6, under frequency is 14GHz, transmitting terminal gain can reach 41.8217dBi.
As shown in Figure 7, under frequency is 14.25GHz, transmitting terminal gain can reach 42.0315dBi.
As shown in Figure 8, under frequency is 14.5GHz, transmitting terminal gain can reach 42.3506dBi.
With the above-mentioned desirable embodiment according to the application for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this application technological thought, can carry out various change and amendment completely.The protection range of the application is not limited only to the technological means disclosed in above-mentioned technological means, also comprises the technical scheme be made up of above technical characteristic 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. one according to claim 1 low section boat-carrying satellite communication antena, it is characterized in that, described feed system (1) comprises Feed Horn (5) and waveguide (6), foaming body (3) is threaded connection the one end in Feed Horn (5), and waveguide (6) is connected to the other end of Feed Horn (5).
3. one according to claim 2 low section boat-carrying satellite communication antena, is characterized in that, described waveguide (6) is positioned at and offers boss and groove with Feed Horn (5) junction, the distance between boss and groove is 1/16 λ.
4. one according to claim 1 low section boat-carrying satellite communication antena, is characterized in that, described foaming body (3) adopts low-k foaming body.
5. one according to claim 1 low section boat-carrying satellite communication antena, is characterized in that, the density of described foaming body (3) is 50g/cm
3-70g/cm
3.
6. one according to claim 5 low section boat-carrying satellite communication antena, is characterized in that, the density of described foaming body (3) is 60g/cm
3.
7. one according to claim 3 low section boat-carrying satellite communication antena, is characterized in that, the degree of depth of described waveguide (6) groove is 1/10 λ, and width is 1/11 λ.
8. one according to claim 3 low section boat-carrying satellite communication antena, 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 |
|---|---|---|---|
| CN201420475538.3U CN204118269U (en) | 2014-08-22 | 2014-08-22 | A kind of low section boat-carrying satellite communication antena |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420475538.3U CN204118269U (en) | 2014-08-22 | 2014-08-22 | A kind of low section boat-carrying satellite communication antena |
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| CN204118269U true CN204118269U (en) | 2015-01-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183924A (en) * | 2014-08-22 | 2014-12-03 | 南京中网卫星通信股份有限公司 | Onboard satellite communication antenna with low profile |
-
2014
- 2014-08-22 CN CN201420475538.3U patent/CN204118269U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104183924A (en) * | 2014-08-22 | 2014-12-03 | 南京中网卫星通信股份有限公司 | Onboard satellite communication antenna with low profile |
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