CN203367490U - High-efficient medium guiding paraboloid antenna - Google Patents
High-efficient medium guiding paraboloid antenna Download PDFInfo
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- CN203367490U CN203367490U CN 201320087307 CN201320087307U CN203367490U CN 203367490 U CN203367490 U CN 203367490U CN 201320087307 CN201320087307 CN 201320087307 CN 201320087307 U CN201320087307 U CN 201320087307U CN 203367490 U CN203367490 U CN 203367490U
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Abstract
The utility model discloses a high-efficient medium guiding paraboloid antenna which comprises a main reflective face, an auxiliary reflective face, medium guide and feed circular waveguide. The auxiliary reflective face is connected with the feed circular waveguide through the medium guide. The lower end of the feed circular waveguide penetrates through the centre of the main reflective face. The medium guide is formed by a plurality of cylinder bodies in different diameters and is integrally in a taper shape. The surface of a wide end of the medium guide is attached to the auxiliary reflective face in an embedded mode. A narrow end of the medium guide is inserted into the feed circular waveguide. The auxiliary reflective face is integrally in a taper shape, and a groove is formed in an outer taper face of the auxiliary reflective face to enable the outer surface of the auxiliary reflective face to form a step structure matched with the medium guide. The auxiliary reflective face is arranged inside the main reflective face and below an opening end face of the main reflective face. The high-efficient medium guiding paraboloid antenna, as novel design and application of a small aperture antenna, has the advantages of being high in efficiency, good in matching performance, small in voltage standing wave ratio, low in profile, low in wind load, compact in integral structure, small in longitudinal size and suitable for being applied to satellite earth antennae of mobile carriers.
Description
Technical field
The utility model relates to the satellite earth antenna technical field, and particularly a kind of high efficiency medium that is applied to the mobile vehicle satellite signal receiving is led parabolic antenna.
Background technology
Satellite television receiving antenna has single offset reflector antenna, Cassegrain antenna and the ring-focus antenna of employing etc. at present.Cassegrain antenna and ring-focus antenna are suitable for large and medium-sized aperture antenna, large for the small aperture antenna design difficulty, and pole blocking can't be avoided, and it is larger that minor face is blocked percentage, and advantage is brought into play not out.The satellite earth antenna that is applied in mobile vehicle requires antenna to have good electrical performance and short longitudinal size, low section, low wind to load with the design feature that lotus answers.The Single offset antenna longitudinal size is longer, need be after figuration, and intercepting part area, antenna electrical performance is suffered a loss greatly.
the content of utility model
Goal of the invention of the present utility model is: to the problem of above-mentioned existence, provide a kind of efficiency high, matching is good, voltage standing wave ratio is little, and longitudinal size is low, low section, low wind is loaded with lotus, and the high efficiency medium that is applicable to the mobile vehicle satellite signal receiving is led parabolic antenna.
The technical solution of the utility model is achieved in that a kind of high efficiency medium leads parabolic antenna, comprise primary reflection surface, subreflector, medium is led and the feed circular waveguide, described subreflector is led with the feed circular waveguide and is connected by medium, described feed circular waveguide lower end is through the primary reflection surface center, it is characterized in that: described medium is led the multilayer cylinder do not waited by diameter and is formed, whole tapered, its wide end surfaces and the laminating of described subreflector inserting type, narrow end inserts in described feed circular waveguide, described subreflector integral body is tapered, being provided with groove at described subreflector male cone (strobilus masculinus) makes its outer surface formation lead with medium the ledge structure matched, described subreflector is arranged in primary reflection surface, below the primary reflection surface open end.
High efficiency medium described in the utility model is led parabolic antenna, its described medium is led by A, B, tri-sections compositions of C, described A section is not waited by diameter and the multilayer cylinder that successively decreases gradually forms, in described A section, the cylinder end face of diameter maximum and described subreflector embed laminating, the multilayer cylinder that described B section is not waited by diameter forms, the cylinder diameter be connected with the A section in described B section is less than with it cylinder diameter in adjacent A section and the cylinder diameter in adjacent B section with it, the multilayer cylinder that described C section is not waited by diameter forms and is placed in described feed circular waveguide.
High efficiency medium described in the utility model is led parabolic antenna, its described A section is not waited by the Pyatyi diameter and the cylinder that successively decreases gradually forms, the first order cylinder end face of described diameter maximum and described subreflector embed laminating, the cylinder that described B section is not waited by three grades of diameters forms, the first order cylinder diameter be connected with the A section in described B section is less than in the A section second level cylinder diameter in level V cylinder diameter and B section, the cylinder that described C section is not waited by six grades of diameters forms, in described C section, second level cylinder diameter is less than in the C section first, three grades of cylinder diameters, in described C section first, three grades of cylinder diameters equate, in described C section the 3rd, four, five, six grades of cylinder diameters successively decrease gradually.
High efficiency medium described in the utility model is led parabolic antenna, the length that its described medium is led is 2.5～2.7 λ, its wide end diameter is 2.4～2.5 λ, the A segment length that described medium is led is 0.6～0.7 λ, the B segment length is 0.3～0.4 λ, the C segment length is 1.4～1.5 λ, and wherein λ is the operating frequency wavelength.
High efficiency medium described in the utility model is led parabolic antenna, and the wide end diameter of its described subreflector is 2.4～2.5 λ, and its length is 0.47～0.48 λ, and wherein λ is the operating frequency wavelength.
High efficiency medium described in the utility model is led parabolic antenna, and its described primary reflection surface is short focus design, the standard parabola that its bore is 18～20 λ, and burnt footpath ratio is 0.2, wherein λ is the operating frequency wavelength.
High efficiency medium described in the utility model is led parabolic antenna, it is provided with the dividing plate phase shifter in bottom in described feed circular waveguide, described dividing plate phase shifter is two symmetrical semicircular waveguides by feed circular waveguide interior separation, be respectively arranged with the output port corresponding with described semicircular waveguide on described feed circular waveguide, its left port is the right-handed circular polarization port, and right output port is the left-hand circular polarization port.
High efficiency medium described in the utility model is led parabolic antenna, and its described dividing plate phase shifter is comprised of the step of multistage different length and height, whole indention, and the height of described step increases progressively to the other end gradually by near medium, leading an end.
High efficiency medium described in the utility model is led parabolic antenna, its described dividing plate phase shifter is comprised of the step of six grades of different lengths and height, and its length is 1.8～2 λ, and described feed circular waveguide length is 3.8～3.9 λ, its diameter is 0.7～0.8 λ, and wherein λ is the operating frequency wavelength.
High efficiency medium described in the utility model is led parabolic antenna, and the longitudinal size of its described antenna is 6 λ, and wherein λ is the operating frequency wavelength.
The utility model is as new design and the application of small aperture antenna, more easily realize good Universal electric and structural behaviour, there is cost low, novel structure, functional, difficulty of processing is little, and one-shot forming does not need debugging, low profile, be easy to batch production, realize at lower cost the dual polarization scheme, and can realize bending the small-bore dual polarized antenna that waveguide is difficult for realization.The utility model is by the design of the integrated design of the short focus design of primary reflection surface, feed system, choice for use dividing plate phase shifter, and the three combines and makes the compact conformation of antenna, and longitudinal size is short, is specially adapted to some specific environments for use.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation that the utility model medium is led.
Fig. 3 is the structural representation of subreflector in the utility model.
Fig. 4 is the structural representation of the utility model median septum phase shifter.
Fig. 5 is 12G directional diagram of the present utility model.
Mark in figure: 1 is primary reflection surface, and 2 is subreflector, and 3 lead for medium, and 4 is the feed circular waveguide, and 5 is groove, and 6 is the dividing plate phase shifter, and 7 is the right-handed circular polarization port, and 8 is the left-hand circular polarization port.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of high efficiency medium is led parabolic antenna, comprise that primary reflection surface 1, subreflector 2, medium lead 3 and feed circular waveguide 4, described subreflector 2 is led 3 by medium and is connected with feed circular waveguide 4, thereby saved subreflector pole, eliminated blocking of pole, improved the efficiency of antenna, described feed circular waveguide 4 lower ends are through primary reflection surface 1 center, and described subreflector 2 is arranged in primary reflection surface 1, below primary reflection surface 1 open end.Wherein, described primary reflection surface adopts the rational short focus design of the degree of depth, the standard parabola that its bore is 18～20 λ, and burnt footpath ratio is that 0.2, λ is the operating frequency wavelength, has reduced antenna volume and profile; Without the standard parabola of figuration, difficulty of processing is little, and one-shot forming does not need debugging, is easy to batch production.
As shown in Figure 2, described medium is led the 3 multilayer cylinders that do not waited by diameter and is formed, whole tapered, its wide end surfaces and described subreflector 2 embed laminating, narrow end inserts in described feed circular waveguide 4, on electric, carry out figuration by the choose reasonable dielectric constant and to dielectric surface, the energy that guiding can be mapped to beyond irradiation area originally is used in main irradiated region, make the refracted wave of dielectric surface arrive subreflector, meet certain amplitude distribution requirement at Antenna aperture after the primary reflection surface reflection, thereby improve the bore utilance of antenna.
Wherein, described medium is led 3 and is divided into tri-sections of A, B, C, described A section is not waited by the Pyatyi diameter and the cylinder that successively decreases gradually forms ledge structure, the PHASE DISTRIBUTION that makes the secondary irradiation ripple meets the requirement of spherical wave in 10dB illumination angle ± 100 °, and the first order cylinder end face of described diameter maximum and described subreflector 2 embed laminating; The cylinder that described B section is not waited by three grades of diameters forms ledge structure, the first order cylinder diameter be connected with the A section in described B section is less than in the A section second level cylinder diameter in level V cylinder diameter and B section, the equal diameters of second level cylinder diameter and feed circular waveguide in described B section, in described B section, more concentrated the shining on subreflector of high-frequency energy in the narrowest bootable waveguide of first order shell portion, work to converge energy; The cylinder that described C section is not waited by six grades of diameters forms and is placed in feed circular waveguide 4, in described C section, second level cylinder diameter is less than first and third grade of cylinder diameter in the C section, in described C section, first and third grade of cylinder diameter equates, in described C section third and fourth, five, six grades of cylinder diameters successively decrease gradually, in described C section third and fourth, five, six grades of cylinder diameters successively decrease gradually, its every grade step is realized an impedance saltus step, final output waveguide end reaches the effect of impedance matching, rises and reduces the purpose that standing wave is optimized the feed gross efficiency.The mode that adopts this kind of stepped form to distribute, physical dimension clearly realizes, is easier to quality control and the machine work of batch production.
Wherein, it is 2.5～2.7 λ that described medium is led 3 entire length, and its wide end diameter is 2.4～2.5 λ, and it is 0.6～0.7 λ that described medium is led 3 A segment length, and the B segment length is 0.3～0.4 λ, and the C segment length is 1.4～1.5 λ.
As shown in Figure 3, described subreflector 2 is whole tapered, is the metal conical surface of figuration, is provided with groove 5 at described subreflector 2 male cone (strobilus masculinus)s and makes its outer surface formation lead 3 ledge structures that match with medium, the wide end diameter of described subreflector 2 is 2.4～2.5 λ, and its length is 0.47～0.48 λ.The amplitude distribution that described step and groove make the secondary irradiation ripple meets the requirement of spherical wave amplitude distribution in 10dB illumination angle ± 100 °, utilize this kind of minor face figuration can realize the more rational amplitude distribution of reflecting surface aperture field, further improve the total efficiency of whole antenna, realize efficiently the resultant effect of high-gain.
By described medium, lead and being used in conjunction with of the figuration of subreflector, guide and take full advantage of waveguide mouth output energy, both dwindled the size of subreflector, exempted from but the supporting structure of subreflector, greatly reduced again the percentage that blocks of subreflector, thereby improved the illumination efficiency of feed system, realized the overall antenna performance of efficient high-gain.
As shown in Figure 4, be provided with dividing plate phase shifter 6 in the interior bottom of described feed circular waveguide 4, described dividing plate phase shifter 6 is two symmetrical semicircular waveguides by feed circular waveguide 4 interior separations, be respectively arranged with the output port corresponding with described semicircular waveguide on described feed circular waveguide 4, its left port is right-handed circular polarization port 7, right output port is left-hand circular polarization port 8, described dividing plate phase shifter 6 is comprised of the step of six grades of different lengths and height, sheet metal for whole indention, the height of described step increases progressively to the other end gradually by near medium, leading 3 one ends, described dividing plate phase shifter entire length is 1.8～2 λ.Be input as the power signal of linear polarization by the arbitrary round waveguide of dividing arm equally, enter in area of diaphragm, change with phase relation, 90 ° of phase differences produce and TE in circular waveguide
11the TE of mould quadrature
11pattern, thus desirable circularly polarised wave obtained to space radiation.Realize the function of dual output double-circle polarization, can receive left-handed, dextrorotation double-circle polarization signal simultaneously, and the design of this dividing plate phase shifter shortened the size of feed system structure, the length of feed circular waveguide is 3.8～3.9 λ, and its diameter is 0.7～0.8 λ.
The utility model is by the design of the integrated design of the short focus design of primary reflection surface, feed system, choice for use dividing plate phase shifter, and the three combines and makes the compact conformation of antenna, and longitudinal size is short, and the longitudinal size of whole antenna is 6 λ.
Below for adopting the relevant test data of antenna of the present utility model:
The Electromagnetic Simulation result is as follows:
Test result is as follows:
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
1. a high efficiency medium is led parabolic antenna, comprise primary reflection surface (1), subreflector (2), medium is led (3) and feed circular waveguide (4), described subreflector (2) is led (3) by medium and is connected with feed circular waveguide (4), described feed circular waveguide (4) lower end is through primary reflection surface (1) center, it is characterized in that: described medium is led the multilayer cylinder (3) do not waited by diameter and is formed, whole tapered, its wide end surfaces and the laminating of described subreflector (2) inserting type, narrow end inserts in described feed circular waveguide (4), described subreflector (2) is whole tapered, being provided with groove (5) at described subreflector (2) male cone (strobilus masculinus) makes its outer surface formation lead the ledge structure that match (3) with medium, described subreflector (2) is arranged in primary reflection surface (1), primary reflection surface (1) is below open end.
2. high efficiency medium according to claim 1 is led parabolic antenna, it is characterized in that: described medium is led (3) by A, B, tri-sections compositions of C, described A section is not waited by diameter and the multilayer cylinder that successively decreases gradually forms, in described A section, the cylinder end face of diameter maximum and described subreflector (2) embed laminating, the multilayer cylinder that described B section is not waited by diameter forms, the cylinder diameter be connected with the A section in described B section is less than with it cylinder diameter in adjacent A section and the cylinder diameter in adjacent B section with it, the multilayer cylinder that described C section is not waited by diameter forms and is placed in described feed circular waveguide (4).
3. high efficiency medium according to claim 2 is led parabolic antenna, it is characterized in that: described A section is not waited by the Pyatyi diameter and the cylinder that successively decreases gradually forms, the first order cylinder end face of described diameter maximum and described subreflector (2) embed laminating, the cylinder that described B section is not waited by three grades of diameters forms, the first order cylinder diameter be connected with the A section in described B section is less than in the A section second level cylinder diameter in level V cylinder diameter and B section, the cylinder that described C section is not waited by six grades of diameters forms, in described C section, second level cylinder diameter is less than in the C section first, three grades of cylinder diameters, in described C section first, three grades of cylinder diameters equate, in described C section the 3rd, four, five, six grades of cylinder diameters successively decrease gradually.
4. high efficiency medium according to claim 3 is led parabolic antenna, it is characterized in that: the length that described medium is led (3) is 2.5～2.7 λ, its wide end diameter is 2.4～2.5 λ, the A segment length that described medium is led (3) is 0.6～0.7 λ, the B segment length is 0.3～0.4 λ, the C segment length is 1.4～1.5 λ, and wherein λ is the operating frequency wavelength.
5. high efficiency medium according to claim 4 is led parabolic antenna, it is characterized in that: the wide end diameter of described subreflector (2) is 2.4～2.5 λ, and its length is 0.47～0.48 λ, and wherein λ is the operating frequency wavelength.
6. high efficiency medium according to claim 5 is led parabolic antenna, it is characterized in that: described primary reflection surface (1) is short focus design, the standard parabola that its bore is 18～20 λ, and burnt footpath ratio is 0.2, wherein λ is the operating frequency wavelength.
7. lead parabolic antenna according to the described high efficiency medium of any one in claim 1 to 6, it is characterized in that: in described feed circular waveguide (4), bottom is provided with dividing plate phase shifter (6), described dividing plate phase shifter (6) is two symmetrical semicircular waveguides by feed circular waveguide (4) interior separation, be respectively arranged with the output port corresponding with described semicircular waveguide on described feed circular waveguide (4), its left port is right-handed circular polarization port (7), and right output port is left-hand circular polarization port (8).
8. high efficiency medium according to claim 7 is led parabolic antenna, it is characterized in that: described dividing plate phase shifter (6) is comprised of the step of multistage different length and height, whole indention, the height of described step increases progressively to the other end gradually by near medium, leading (3) one ends.
9. high efficiency medium according to claim 8 is led parabolic antenna, it is characterized in that: described dividing plate phase shifter (6) is comprised of the step of six grades of different lengths and height, its length is 1.8～2 λ, described feed circular waveguide (4) length is 3.8～3.9 λ, its diameter is 0.7～0.8 λ, and wherein λ is the operating frequency wavelength.
10.1 high efficiency medium according to claim 9 is led parabolic antenna, it is characterized in that: the longitudinal size of described antenna is 6 λ, and wherein λ is the operating frequency wavelength.
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| CN 201320087307 CN203367490U (en) | 2013-02-26 | 2013-02-26 | High-efficient medium guiding paraboloid antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320087307 CN203367490U (en) | 2013-02-26 | 2013-02-26 | High-efficient medium guiding paraboloid antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094714A (en) * | 2013-02-26 | 2013-05-08 | 四川省视频电子有限责任公司 | High-efficient medium guiding paraboloid antenna |
| CN103730737A (en) * | 2014-01-16 | 2014-04-16 | 中国人民解放军国防科学技术大学 | Wedge-shaped gradual change waveguide cavity circular polarizer compact in structure |
| CN106961000A (en) * | 2017-04-06 | 2017-07-18 | 上海航天测控通信研究所 | A kind of spaceborne ring-focus antenna anti-based on support pair |
| CN111641048A (en) * | 2020-06-04 | 2020-09-08 | 肇庆市祥嘉盛科技有限公司 | Novel dual-polarized double-paraboloid antenna |
| CN112582806A (en) * | 2020-12-23 | 2021-03-30 | 东莞市驰铭精工科技有限公司 | Double-frequency dual-polarization shared parabolic antenna with front and back feed fusion |
-
2013
- 2013-02-26 CN CN 201320087307 patent/CN203367490U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103094714A (en) * | 2013-02-26 | 2013-05-08 | 四川省视频电子有限责任公司 | High-efficient medium guiding paraboloid antenna |
| CN103094714B (en) * | 2013-02-26 | 2015-05-13 | 四川省视频电子有限责任公司 | High-efficient medium guiding paraboloid antenna |
| CN103730737A (en) * | 2014-01-16 | 2014-04-16 | 中国人民解放军国防科学技术大学 | Wedge-shaped gradual change waveguide cavity circular polarizer compact in structure |
| CN103730737B (en) * | 2014-01-16 | 2016-01-13 | 中国人民解放军国防科学技术大学 | A kind of wedge shape gradual change waveguide cavity circular polarizer of compact conformation |
| CN106961000A (en) * | 2017-04-06 | 2017-07-18 | 上海航天测控通信研究所 | A kind of spaceborne ring-focus antenna anti-based on support pair |
| CN106961000B (en) * | 2017-04-06 | 2019-08-23 | 上海航天测控通信研究所 | A kind of spaceborne ring-focus antenna anti-based on support pair |
| CN111641048A (en) * | 2020-06-04 | 2020-09-08 | 肇庆市祥嘉盛科技有限公司 | Novel dual-polarized double-paraboloid antenna |
| CN112582806A (en) * | 2020-12-23 | 2021-03-30 | 东莞市驰铭精工科技有限公司 | Double-frequency dual-polarization shared parabolic antenna with front and back feed fusion |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131225 Termination date: 20170226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |