CN204118270U - A kind of portable double offset parabolic antenna - Google Patents
A kind of portable double offset parabolic antenna Download PDFInfo
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- CN204118270U CN204118270U CN201420446104.0U CN201420446104U CN204118270U CN 204118270 U CN204118270 U CN 204118270U CN 201420446104 U CN201420446104 U CN 201420446104U CN 204118270 U CN204118270 U CN 204118270U
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Abstract
This application discloses a kind of portable double offset parabolic antenna, comprise: primary reflection surface, subreflector, primary reflection surface bracing or strutting arrangement, subreflector fixture, feed system, feed bracing or strutting arrangement, servomotor, wherein, described primary reflection surface is fixed on primary reflection surface bracing or strutting arrangement, subreflector is fixed on primary reflection surface bracing or strutting arrangement by subreflector fixture, servomotor is fixed on below primary reflection surface bracing or strutting arrangement, feed system is fixed on primary reflection surface bracing or strutting arrangement by feed bracing or strutting arrangement, primary reflection surface is horizontal oval structure, namely primary reflection surface be wider than height.This antenna is relative to existing Pascal Greggory antenna, and while guarantee antenna performance, have focal length short, bore is little, and feed is little, the feature of function admirable, structurally has structure simple, lightweight, easily processes, the feature that cost is low.
Description
Technical field
The application belongs to satellite communication field, and specifically one collects satellite-signal by double-reflecting face, and carries out by feed system the portable double offset parabolic antenna processing satellite-signal.
Background technology
At present in satellite communication, in order to improve the intersection isolation of antenna, what Portable satellite communication antenna use was more is double offset Pascal Greggory parabolic antenna.What on market, Portable satellite communication antenna use was more is 1.2 meters of Pascal Greggory double offset parabolic antennas, size is larger, large about 1200*1200*630(mm), antenna longitudinal length is long, facts have proved the antenna adopting this bore, due to the characteristic that antenna is intrinsic, make portable backpack antenna, add servo system and communication system, single bag weight is greater than 30kg, is difficult to realize single bag and bears.
The satellite antenna of present stage, what usually adopt is perpendicular oval structure, after adopting this structure, although can collect signal better, ensures signal strength signal intensity; But, due to the structure problem of perpendicular ellipse itself, make its overall antennas structure comparison large, be inconvenient to carry, especially for the satellite antenna of individual soldier's communication, be more difficult to carry.
Summary of the invention
The technical problem that the application will solve is for above-mentioned the deficiencies in the prior art, and provides a kind of portable double offset parabolic antenna, and it can realize individual soldier to a great extent and carry, individual soldier's load, substantially increases portability and the ease for use of antenna.
For solving the problems of the technologies described above, the technical scheme that the application adopts is:
A kind of portable double offset parabolic antenna, comprise: primary reflection surface, subreflector, primary reflection surface bracing or strutting arrangement, subreflector fixture, feed system, feed bracing or strutting arrangement, servomotor, described primary reflection surface is fixed on primary reflection surface bracing or strutting arrangement, subreflector is fixed on primary reflection surface bracing or strutting arrangement by subreflector fixture, and servomotor is fixed on below primary reflection surface bracing or strutting arrangement, and feed system is fixed on primary reflection surface bracing or strutting arrangement by feed bracing or strutting arrangement; Primary reflection surface is horizontal oval structure.
Subreflector described in the application is also horizontal oval structure.
Primary reflection surface described in the application is that six lobe antenna surfaces are spliced by hasp.
Described in the application, primary reflection surface bracing or strutting arrangement comprises: primary reflection surface support, support arm, support baseboard, wherein, described primary reflection surface is fixed on primary reflection surface support, and primary reflection surface support vertical is fixed on support baseboard, and support arm is fixed on primary reflection surface support.
Subreflector fixture described in the application comprises subreflector pole and subreflector fixed head, and described subreflector is arranged on subreflector pole, and subreflector pole is arranged on subreflector fixed head, and subreflector fixed head is arranged on support arm.
Feed system described in the application, comprises Feed Horn and duplexer, and wherein, duplexer is arranged on Feed Horn rear end.
Feed bracing or strutting arrangement described in the application mainly comprises feed firm banking and feed bracing frame, and described Feed Horn is arranged on feed bracing frame, and feed bracing frame is arranged on feed firm banking, and feed firm banking is arranged on support arm.
Described in the application, subreflector is provided with buttress brace behind, and subreflector is fixed on subreflector pole by buttress brace.
After the application adopts said structure, there is following technique effect:
A kind of portable double offset parabolic antenna described in the application, this antenna is relative to existing Pascal Greggory antenna, while guarantee antenna performance, system has focal length short, bore is little, feed is little, the feature of function admirable, structurally has structure simple, lightweight, easy processing, the feature that cost is low.
This antenna preferably adopts the horizontal stroke of 1*0.84 rice oval, substantially improves the directional diagram in antenna bearingt face; Focal length is 495mm, substantially reduces the longitudinal length of antenna, thus reduces the physical dimension of antenna, alleviates the construction weight of antenna, thus achieves the miniaturization of antenna in a certain sense; Feed adopts bore to be 60mm, and length is the small-sized feed of 38mm, so also reduces the size of structural member from multi-angle, alleviates construction weight.Individual soldier can be realized to a great extent carry, individual soldier's load, substantially increase portability and the ease for use of antenna.
There is high-gain, low sidelobe, low-cross polarization feature according to the Pascal Greggory double offset parabolic antenna of technique scheme design.Wherein receiving terminal (f=12.5GHz) gain reaches 39.1dB, and in 1dB beamwidth, cross polarization reaches-33.1dB, and minor level is less than-20dB; Transmitting terminal (f=14.25GHz) gain reaches 40.6dB, and in 1dB beamwidth, cross polarization reaches-34.1dB, and minor level is less than-20dB, meets networking requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of the application;
Fig. 2 is the partial enlarged view of Fig. 1;
Fig. 3 be primary reflection surface described in the application structural representation;
Fig. 4 is the subreflector structural representation of the application;
Fig. 5 is the feed system schematic diagram of the application;
Fig. 6 is the primary reflection surface support frame structure schematic diagram of the application;
Fig. 7 is antenna receiving terminal gain schematic diagram described in the application;
Fig. 8 is antenna transmission end gain schematic diagram described in the application;
In figure: 1-primary reflection surface, 2-primary reflection surface support, 3-support baseboard, 4-support arm, 5-duplexer, 6-subreflector fixed head, 7-subreflector pole, 8-subreflector, 9-buttress brace, 10-Feed Horn, 11-feed bracing frame, 12-feed firm banking, 13-servomotor;
A1 line represents that frequency is main polarization directional diagram under 12.5GHz; B1 line represents that frequency is chiasmate directional diagram under 14.25GHz;
A2 line represents that frequency is main polarization directional diagram under 14.25GHz; B2 line represents that frequency is chiasmate directional diagram under 14.25GHz.
Embodiment
By reference to the accompanying drawings the application is described in further detail now.These accompanying drawings are the schematic diagram of simplification, and the basic structure of the application is only described in a schematic way, and therefore it only shows the formation relevant with the application.
As shown in Figure 1, a kind of portable double offset parabolic antenna described in the application, comprise: primary reflection surface 1, subreflector 8, primary reflection surface bracing or strutting arrangement, subreflector fixture, feed system, feed bracing or strutting arrangement, servomotor 13, wherein, described primary reflection surface 1 is fixed on primary reflection surface bracing or strutting arrangement, subreflector 8 is fixed on primary reflection surface bracing or strutting arrangement by subreflector fixture, and servomotor 13 is fixed on below primary reflection surface bracing or strutting arrangement, and feed system is fixed on primary reflection surface bracing or strutting arrangement by feed bracing or strutting arrangement.
As shown in Figure 3, primary reflection surface 1 is horizontal oval structure, and namely the width of primary reflection surface 1 is greater than height.Adopt horizontal ellipse can effectively reduce the volume of satellite antenna, reduce the weight of antenna, and convenient processing, make satellite antenna can realize individual soldier and carry.
One as the application is improved, and described subreflector 8 is also horizontal oval structure, and namely the width of subreflector 8 is greater than height.After adopting this design, when ensureing signal strength signal intensity, the size of antenna can be reduced.
As shown in Figure 1, described in the application, primary reflection surface bracing or strutting arrangement comprises: primary reflection surface support 2, support arm 4, support baseboard 3, described primary reflection surface 1 is fixed on primary reflection surface support 2, and primary reflection surface support 2 is fixed on support baseboard 3, and support arm 4 is stabilized on primary reflection surface support 2.After adopting this design, can ensure that primary reflection surface 1 can stably be fixed, can not offset, thus ensure that the quality of satellite communication.
Subreflector fixture described in the application comprises subreflector pole 7 and subreflector fixed head 6, described subreflector 8 is arranged on subreflector pole 7, subreflector pole 7 is arranged on subreflector fixed head 6, and subreflector fixed head 6 is arranged on support arm 4.After adopting this design, can ensure that subreflector 8 is fixed on support arm 4, and can ensure that subreflector 8 and primary reflection surface 1 relative position do not offset, ensure that the signal transmission loss between major-minor reflecting surface is minimum.
As shown in Figure 5, the feed system described in the application comprises Feed Horn 10 and duplexer 5, and duplexer 5 is arranged on Feed Horn 10 rear end.The signal collected can well be processed after adopting this design.
As shown in Figure 1, 2, feed bracing or strutting arrangement described in the application comprises feed firm banking 12 and feed bracing frame 11, described Feed Horn 10 is arranged on feed bracing frame 11, and feed bracing frame 11 is arranged on feed firm banking 12, and feed firm banking 12 is arranged on support arm 4.After adopting this design, what can ensure Feed Horn 10 and duplexer 5 is fixed on feed bracing frame 11, and can ensure that the relative position of Feed Horn 10 and subreflector 8 can not change, make the signal transmission loss between subreflector 8 and Feed Horn 10 reach minimum.All the other structures are identical with embodiment 1 with advantage.
As shown in Figure 4, as a modification of the present invention, described subreflector 8 is provided with buttress brace 9 behind, and subreflector 8 is fixed on subreflector pole 7 by buttress brace 9.After adopting this design, subreflector 8 can not be damaged in installation process, the intensity of signal can not be affected, also improve the intensity of subreflector 8 simultaneously, make subreflector 8 more durable, longer service life.
As shown in Figure 2, as a modification of the present invention, described primary reflection surface 1 adopts six lobe antenna surfaces to be spliced, and six lobe antenna surfaces are fixed by hasp.After adopting this design, the size of each lobe antenna surface is close with the size of bracing frame, the storage of convenient antenna and the transport of convenient antenna.
As shown in Figure 5, as a modification of the present invention, described Feed Horn 10 adopts small-sized feed, and its bore is 60mm, and length is 38mm.After adopting this design, under the prerequisite ensureing signal strength signal intensity, the size of feed can be reduced as far as possible, thus reduce the size of integrated antenna, and reduce the quality of antenna, facilitate individual soldier to carry.
As shown in Figure 6, as a modification of the present invention, described primary reflection surface support 2 is provided with a gap, after adopting this design, can accelerate the installation rate of primary reflection surface support, add the portability of filling in, thus better realizes individual soldier and carry.
As shown in Figure 7, there is high-gain, low sidelobe, low-cross polarization feature according to the Pascal Greggory double offset parabolic antenna of technique scheme design.Wherein receiving terminal (f=12.5GHz) gain reaches 39.1dB, and in 1dB beamwidth, cross polarization reaches-33.1dB, and minor level is less than-20dB.In figure, abscissa is angle, and ordinate is gain decibel, and A1 line represents main polarization directional diagram, and B1 line represents chiasmate directional diagram.
As shown in Figure 8, according to the Pascal Greggory double offset parabolic antenna of technique scheme design, its transmitting terminal (f=14.25GHz) gain reaches 40.6dB, and in 1dB beamwidth, cross polarization reaches-34.1dB, and minor level is less than-20dB, meets networking requirement.In figure, abscissa is angle, and ordinate is gain decibel, and A2 line represents main polarization directional diagram, and B2 line represents chiasmate directional diagram.
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 technical scope of this application is not limited to the content on specification, must determine its technical scope according to right.
Claims (8)
1. a portable double offset parabolic antenna, it is characterized in that, comprise: primary reflection surface (1), subreflector (8), primary reflection surface bracing or strutting arrangement, subreflector fixture, feed system, feed bracing or strutting arrangement, servomotor (13), described primary reflection surface (1) is fixed on primary reflection surface bracing or strutting arrangement, subreflector (8) is fixed on primary reflection surface bracing or strutting arrangement by subreflector fixture, servomotor (13) is fixed on below primary reflection surface bracing or strutting arrangement, feed system is fixed on primary reflection surface bracing or strutting arrangement by feed bracing or strutting arrangement, primary reflection surface (1) is horizontal oval structure.
2. the portable double offset parabolic antenna of one according to claim 1, is characterized in that: described subreflector (8) is also horizontal oval structure.
3. the portable double offset parabolic antenna of one according to claim 1, is characterized in that: described primary reflection surface (1) is that six lobe antenna surfaces are spliced by hasp.
4. the portable double offset parabolic antenna of one according to claim 1, it is characterized in that: described primary reflection surface bracing or strutting arrangement comprises: primary reflection surface support (2), support arm (4), support baseboard (3), wherein, described primary reflection surface (1) is fixed on primary reflection surface support (2), primary reflection surface support (2) is vertically fixed on support baseboard (3), and support arm (4) is fixed on primary reflection surface support (2).
5. the portable double offset parabolic antenna of one according to claim 4, it is characterized in that: described subreflector fixture comprises subreflector pole (7) and subreflector fixed head (6), described subreflector (8) is arranged on subreflector pole (7), subreflector pole (7) is arranged on subreflector fixed head (6), and subreflector fixed head (6) is arranged on support arm (4).
6. the portable double offset parabolic antenna of one according to claim 1, is characterized in that: described feed system comprises Feed Horn (10) and duplexer (5), and wherein, duplexer (5) is arranged on Feed Horn (10) rear end.
7. the portable double offset parabolic antenna of one according to claim 6, it is characterized in that: described feed bracing or strutting arrangement comprises feed firm banking (12) and feed bracing frame (11), described Feed Horn (10) is arranged on feed bracing frame (11), feed bracing frame (11) is arranged on feed firm banking (12), and feed firm banking (12) is arranged on support arm (4).
8. the portable double offset parabolic antenna of one according to claim 5, it is characterized in that: described subreflector (8) is provided with buttress brace (9) behind, subreflector (8) is fixed on subreflector pole (7) by buttress brace (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446104.0U CN204118270U (en) | 2014-08-08 | 2014-08-08 | A kind of portable double offset parabolic antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420446104.0U CN204118270U (en) | 2014-08-08 | 2014-08-08 | A kind of portable double offset parabolic antenna |
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| CN204118270U true CN204118270U (en) | 2015-01-21 |
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| CN201420446104.0U Active CN204118270U (en) | 2014-08-08 | 2014-08-08 | A kind of portable double offset parabolic antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167612A (en) * | 2014-08-08 | 2014-11-26 | 南京中网卫星通信股份有限公司 | Portable double-offset-parabola antenna |
| CN108649345A (en) * | 2018-04-12 | 2018-10-12 | 中国科学院电子学研究所 | A kind of confocal dual paraboloid antenna |
-
2014
- 2014-08-08 CN CN201420446104.0U patent/CN204118270U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104167612A (en) * | 2014-08-08 | 2014-11-26 | 南京中网卫星通信股份有限公司 | Portable double-offset-parabola antenna |
| CN108649345A (en) * | 2018-04-12 | 2018-10-12 | 中国科学院电子学研究所 | A kind of confocal dual paraboloid antenna |
| CN108649345B (en) * | 2018-04-12 | 2020-08-28 | 中国科学院电子学研究所 | Confocal double-paraboloid antenna |
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