CN2508471Y - Single offset feedforward parabolic antenna - Google Patents
Single offset feedforward parabolic antenna Download PDFInfo
- Publication number
- CN2508471Y CN2508471Y CN 01265655 CN01265655U CN2508471Y CN 2508471 Y CN2508471 Y CN 2508471Y CN 01265655 CN01265655 CN 01265655 CN 01265655 U CN01265655 U CN 01265655U CN 2508471 Y CN2508471 Y CN 2508471Y
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- antenna
- feed
- feed source
- back frame
- corrugated horn
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Abstract
The utility model belongs to an antenna, in particular to a single-bias feedforward parabolic antenna. The utility model consists of an antenna reflection surface, a feed source supporting rod, a feed source, an antenna seat frame and an adjusting mechanism, etc. The antenna reflection surface is matched with an antenna back frame concavely and convexly, and the antenna back frame is connected to the antenna seat frame, the feed source supporting rod is connected to the lower end of the antenna back frame, the feed source is arranged at the upper part of the feed source supporting rod through a feed source bracket, and two ends of an antenna pull rod are fixed on the antenna reflection surface and the feed source supporting rod. The feed source consists of a corrugated horn hood, a feed source orifice film, a corrugated horn and a high-order film actuator, a phase shift section and a diplexer, wherein the feed source orifice film is arranged between the corrugated horn hood and the corrugated horn, and the high-order film actuator, the phase shift section and the diplexer are connected in sequence. The utility model solves the disadvantages of the prior art that the mechanical processing and installation are complex, the requirement to the processing equipment is high, and the electrical performance (more particularly the cross-polarization property) of the antenna is poor, etc. The utility model has the advantages of high gain, low side-lobe, and good cross-polarization electrical level, high structural strength, convenient installation and debugging, and low production cost, etc.
Description
Technical field
The utility model belongs to antenna, is meant a kind of single biasing forward-feed type parabolic antenna especially.
Background technology
Increasing along with power on the raising of communication satellite technology, the star constantly reduces the satellite communication earth station antenna aperture; And along with the increase to the satellite communication demand, in order to make full use of limited frequency resource, spectrum reuse technique has been adopted in satellite communication.In order to reduce the Communication Jamming between same frequency, the cross polarization level characteristic of satellite communication antena is had higher requirement.Small-bore satellite communication earth station antenna is answered first-selected feedforward offset parabolic antenna, but a fatal shortcoming of feedforward offset parabolic antenna is exactly when linear polarization is used, cross polarization level in asymmetric is too high, can not satisfy the requirement of satellite communication development, become the bottleneck of restriction satellite communication in this field development.Be head it off, method in common is at present:
1, adopts the double offset parabolic antenna.Though obtained good antenna electrical performance, but because double offset parabolic antenna subreflector is symmetrical structure, mechanical processing technique complexity, high to the process equipment requirement has improved product cost, and complexity is installed, be unsuitable for producing in batches and installing.
2, adopted the method for extended antenna focal length.Though this scheme has been improved the performance of antenna to a certain extent, the structural behaviour of antenna that the disadvantage of this scheme has been serious deterioration seriously reduces the wind resistance of antenna, the ability of carrying satellite communication outdoor equipment, has influenced the normal use of antenna.And the cross polarization level characteristic of antenna does not also satisfy the requirement of the satellite company (Asia and the Pacific Satellite Company) that has relatively high expectations at present.
Summary of the invention
The purpose of this utility model is to provide a kind of antenna efficiency height, sidelobe performance is good, voltage standing wave ratio is low, particularly the cross polarization characteristics of antenna is good, has satisfied single biasing forward-feed type parabolic antenna to the requirement of the highest satellite company of its performance requirement to overcome the deficiency of prior art.
Overall structure of the present utility model is:
Single biasing forward-feed type parabolic antenna, by antenna reflective face 1, antenna back frame 2, antenna pull bar 4, feed pole 3, feed carriage 5, feed 6, antenna mount 7, adjusting mechanism is formed, wherein antenna reflective face 1 and 2 concavo-convex cooperations of antenna back frame, antenna back frame 2 is connected on the antenna mount 7, feed pole 3 is connected antenna back frame 2 lower ends, feed 6 is arranged on the top of feed pole 3 by feed carriage 5, the two ends of antenna pull bar 4 are separately fixed on antenna reflective face 1 and the feed pole 3, described feed 6 is by corrugated horn lid 10, feed membrana oralis 11, corrugated horn and high order film exciter 12, jayrator 13, duplexer 14 is formed, wherein be provided with feed membrana oralis 11 between the actinal surface of corrugated horn lid 10 and corrugated horn, corrugated horn and high order film exciter 12 and jayrator 13, duplexer 14 usefulness securing members are linked in sequence successively.
Concrete structure of the present utility model also has:
Adjusting mechanism comprises the orientation adjustment mechanism 8 and the aligning elevation gear 9 of antenna, wherein orientation adjustment mechanism 8 two ends of antenna are connected on the column and swivel base on the antenna mount 7, aligning elevation gear 9 one ends are connected on the antenna back frame 2, and the other end is connected on the antenna mount 7.
The higher mode exciter 12 of feed 6 is made up of step waveguide 15 and three excitation screws 16 that probe in the waveguide, the diameter ratio of step waveguide 15 is between the b/a=1.08 ∽ 1.5, excitation screw 16 center lines are 10 ° of 0 ° of ∽ with the normal direction angular range that probes into step waveguide 15 inner arm place waveguide inner arms, three excitation screw 16 center lines with probe at 3 that step waveguide 15 inner arms intersect and be triangle projective planum, in this plane, the angle of step waveguide 15 inner arm center lines and its intersection point and any 2 lines of triangle is between 155 ° of 20 ° of ∽, excitation screw 16 probes into the degree of depth in the step waveguide 15 between 0.02 ∽, 0.12 λ, and wherein λ is an operation wavelength.
The jayrator 13 of feed 6 is a light wall circular waveguide, and its length range is being that wherein λ is an operation wavelength between 0.2 ∽, 1.5 λ.
The obtained technological progress of the utility model is:
The utility model is by the feed of the single biasing of optimal design forward-feed type parabolic antenna, lowered the cross polarization level of single biasing forward-feed type parabolic antenna effectively, make it satisfy the requirement of satellite communication, and the efficient height of antenna, sidelobe performance is good, voltage standing wave ratio is low to the antenna cross-polarization level.List is setovered forward-feed type parabolic antenna focal length/diameter than little, thereby makes simple in structure, easy for installation, the compartment external equipment ability reinforcement and easy for installation of antenna.
Accompanying drawing of the present utility model has:
Fig. 1 is an overall structure schematic diagram of the present utility model.
Fig. 2 is the corrugated horn in the feed and the structural representation of high order film exciter.
Fig. 3 is that the A-A of Fig. 2 is to view.
Fig. 4 is the structural representation of feed.
Fig. 5 is the structural representation of aligning elevation gear.
Fig. 6 is the structural representation of orientation adjusting device.
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
With reference to figure one, the antenna reflective face 1 usefulness securing member in the present embodiment is fixed on the antenna back frame 2.Single biasing forward-feed type parabolic antenna reflecting surface 1 in the present embodiment adopts commercially available 2 millimeters LF2 rustproof aluminium sheets to form by the mold integral compacting on hydraulic press, simultaneously at the actinal surface back side of antenna reflective face 1 compacting one circle flange, to strengthen the intensity of aerial panel.Make a call to four installing holes on antenna reflective face 1, be fixed on the antenna back frame 2 with securing member, antenna reflective face 1 makes the electromagnetic wave that is parallel to the parabolic axis direction focus on paraboloidal focus, thereby realizes the reception of radio wave; Electromagnetic wave from parabolic focus emission comes after antenna reflective face 1 reflection, is transmitted into free space, and its direction is for leaving paraboloidal axis direction, thus the emission of realization radio wave.
The steel plate that antenna back frame 2 adopts 3 millimeters thick in the present embodiment is welded into tower structure again by the curved channel-section steel of plate that the mould compacting forms, and U type ear sheet of welding bores the connecting hole of two symmetries on framework, so that connect the aligning elevation gear of antenna.Four plate bent angle steel are installed on the framework of antenna back frame, itself and antenna reflective face 1 are linked together with securing member.Antenna back frame 2 is connected on the base of antenna by pitch axis and pitching leading screw.
Feed pole 3 in the present embodiment adopts the steel plate of commercially available 3 millimeters thick by the curved channel-section steel of plate that the mould compacting forms, and is welded into the broken-line type structure, is connected the lower end of antenna back frame with pin hole, and the other end links to each other with the antenna pull bar with securing member.
Aligning elevation gear in the present embodiment is made of pitching leading screw and screw as shown in Figure 5, and orientation adjusting device is formed with the screw that is positioned on the antenna mount 7 that is set in its right part by regulating leading screw as shown in Figure 6.
The concise and to the point operation principle of the utility model:
The antenna emission: antenna feed 6 is placed on the singly focus of biasing forward-feed type parabolic antenna, and the electromagnetic wave irradiation that feed 6 is launched is to the parabola of antenna, and by after the parabolic reflector, formation is parallel to the plane wave of parabolic focal axis, is transmitted into free space.
Antenna receives: by the parabola of the electromagnetic wave irradiation that is parallel to parabolic focal axis to single biasing forward-feed type parabolic antenna, and by after the parabolic reflector, electromagnetic wave is converged to the focus of single biasing forward-feed type parabolic antenna, and receive, and be transferred to the receiving equipment of antenna by the feed 6 that phase center is positioned at parabolic focus.
Claims (4)
1, single biasing forward-feed type parabolic antenna, by antenna reflective face (1), antenna back frame (2), antenna pull bar (4), feed pole (3), feed carriage (5), feed (6), antenna mount (7), adjusting mechanism is formed, wherein antenna reflective face (1) and concavo-convex cooperation of antenna back frame (2), antenna back frame (2) is connected on the antenna mount (7), feed pole (3) is connected antenna back frame (2) lower end, feed (6) is arranged on the top of feed pole (3) by feed carriage (5), the two ends of antenna pull bar (4) are respectively with being fixed on antenna reflective face (1) and the feed pole (3), it is characterized in that described feed (6) is by corrugated horn lid (10), feed membrana oralis (11), corrugated horn and high order film exciter (12), jayrator (13), duplexer (14) is formed, wherein be provided with feed membrana oralis (11) between the actinal surface of corrugated horn lid (10) and corrugated horn, corrugated horn and high order film exciter (12) and jayrator (13), duplexer (14) is linked in sequence successively with securing member.
2, single biasing forward-feed type parabolic antenna according to claim 1, it is characterized in that described adjusting mechanism comprises orientation adjustment mechanism (8) and aligning elevation gear (9), orientation adjustment mechanism (8) two ends are connected on the column and swivel base on the antenna mount (7), aligning elevation gear (9) one ends are connected on the antenna back frame (2), and the other end is connected on the antenna mount (7).
3, single biasing forward-feed type parabolic antenna according to claim 1, the higher mode exciter (12) that it is characterized in that described feed (6) is made up of step waveguide (15) and three excitation screws (16) of probeing in the waveguide, the diameter ratio of step waveguide (15) is between the b/a=1.08 ∽ 1.5, excitation screw (16) center line is 10 ° of 0 ° of ∽ with the normal direction angular range that probes into step waveguide (15) inner arm place waveguide inner arm, three excitation screw (16) center lines with probe at 3 that step waveguide (15) inner arm intersects and be triangle projective planum, in this plane, the angle of step waveguide (15) inner arm center line and its intersection point and any 2 lines of triangle is between 155 ° of 20 ° of ∽, excitation screw (16) probes into the interior degree of depth of step waveguide (15) between 0.02 ∽, 0.12 λ, and wherein λ is an operation wavelength.
4, single biasing forward-feed type parabolic antenna according to claim 1 is characterized in that the jayrator (13) of feed (6) is light wall circular waveguide, and its length range is being between 0.2 ∽, 1.5 λ, and wherein λ is an operation wavelength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265655 CN2508471Y (en) | 2001-09-27 | 2001-09-27 | Single offset feedforward parabolic antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01265655 CN2508471Y (en) | 2001-09-27 | 2001-09-27 | Single offset feedforward parabolic antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2508471Y true CN2508471Y (en) | 2002-08-28 |
Family
ID=33672471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01265655 Expired - Fee Related CN2508471Y (en) | 2001-09-27 | 2001-09-27 | Single offset feedforward parabolic antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2508471Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058488A (en) * | 2015-04-02 | 2016-10-26 | 智邦科技股份有限公司 | Parabolic antenna |
| CN109378568A (en) * | 2018-11-19 | 2019-02-22 | 国家电网公司 | Antenna and satellite communication station |
| CN109861005A (en) * | 2018-12-26 | 2019-06-07 | 桂林长海发展有限责任公司 | Multiband crossing beams paraboloid direction-finder antenna |
-
2001
- 2001-09-27 CN CN 01265655 patent/CN2508471Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058488A (en) * | 2015-04-02 | 2016-10-26 | 智邦科技股份有限公司 | Parabolic antenna |
| CN106058488B (en) * | 2015-04-02 | 2019-05-21 | 智邦科技股份有限公司 | Parabola antenna |
| CN109378568A (en) * | 2018-11-19 | 2019-02-22 | 国家电网公司 | Antenna and satellite communication station |
| CN109861005A (en) * | 2018-12-26 | 2019-06-07 | 桂林长海发展有限责任公司 | Multiband crossing beams paraboloid direction-finder antenna |
| CN109861005B (en) * | 2018-12-26 | 2021-01-26 | 桂林长海发展有限责任公司 | Multi-band cross beam paraboloid direction-finding antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |