CN2462555Y - Corrugated horn feed source for improving offset paraboloid antenna crossing polarization characteristics - Google Patents
Corrugated horn feed source for improving offset paraboloid antenna crossing polarization characteristics Download PDFInfo
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- CN2462555Y CN2462555Y CN 01201709 CN01201709U CN2462555Y CN 2462555 Y CN2462555 Y CN 2462555Y CN 01201709 CN01201709 CN 01201709 CN 01201709 U CN01201709 U CN 01201709U CN 2462555 Y CN2462555 Y CN 2462555Y
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- corrugated horn
- higher mode
- circular waveguide
- millimeters
- light wall
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Abstract
The utility model discloses a corrugated horn feed source for improving the crossing polarization characteristic of an offset paraboloid antenna, which is composed of a double mode corrugated horn and an exciter which is composed of higher order mode propagation, cutoff light wall circular waveguide, a coupling cavity and a coupling hole. The utility model makes use of a main mode HE11 in the double mode corrugated horn to ensure than an antenna has high gain and low side lobe performance, and makes use of the higher order mode HE 21 mode in the corrugated horn to reduce crossing polarization radiation electric level. The utility model is especially suitable for serving as a feed source device for a hygiene communication single offset paraboloid antenna with a small focal length diameter ratio under special requirements, with the characteristics of simple structure, convenient manufacture, convenient batch production, etc.
Description
The utility model relates to a kind of corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics in the communication antenna field, is specially adapted to have high-gain in the satellite communication system, hangs down the single-offset parabolic reflector antenna of secondary lobe, low-cross polarization performance and needs the satellite communication single-offset parabolic reflector antenna of little F/D focal length/diameter to do the corrugated horn feed source device.
Single-offset parabolic reflector antenna needs in the communication system of high-gain and low side lobe radiation characteristic through being usually used in, because feed and supporting construction thereof have been avoided the optical path of incident wave and reflected wave, so the high-gain and the low sidelobe performance that have obtained.But, because bias structure has destroyed the symmetry of antenna structure, make single-offset parabolic reflector antenna produce an important disadvantages, that is: the beam tilt phenomenon when depolarising characteristic when linear polarization is used and circular polarization are used, this is in high performance communication system, particularly in the satellite communication system that adopts the channeling system, do not allow to occur, limited the practical application of single-offset parabolic reflector antenna in satellite communication field thus.
In order to improve the cross polarization characteristics of single-offset parabolic reflector antenna, the technical measures that domestic and international researcher generally takes are to strengthen the F/D focal length/diameter of parabolic antenna, but, use big F/D focal length/diameter bring difficulty can for the supporting construction of feed, and long more its malformation of the supporting construction of feed is big more, the overall electric property of antenna just is difficult to also guarantee that the single-offset parabolic reflector antenna of big F/D focal length/diameter more is unfavorable for the operating position of vehicle-mounted mobile radio station.In addition, even F/D focal length/diameter increases to 0.9, its cross polarization level also is difficult to reach in the main beam 1dB point range of satellite organization prescribed the networking standard less than-33dB.
The purpose of this utility model is to avoid the weak point in the above-mentioned background technology and provides a kind of and can reduce single-offset parabolic reflector antenna cross polarization radiation level, can guarantee that antenna has the corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics of high-gain and low side lobe performance, and the utility model also have simple in structure, be convenient to processing and manufacturing and batch process, characteristics such as with low cost, be fit in the satellite communication system single-offset parabolic reflector antenna and do the corrugated horn feed.
The purpose of this utility model is achieved in that its two corrugated horn 1 of touching by wave groove 19 structures, higher mode propagates light wall circular waveguide 12 and higher mode are by the exciter 2 of light wall circular waveguide 13 structures, chamber cover plate 3 constitutes, wherein process 1 to 5 coupling cavity 4 structure on higher mode propagates light wall circular waveguide 12 circle wall of exciter 2,1 to 5 coupling aperture 5 structure of processing between 1 to 5 coupling cavity 4 and higher mode propagates light wall circular waveguide 12 circumferential inner walls, chamber cover plate 3 is screwed on coupling cavity 4, the higher mode propagates light wall circular waveguide 12 of exciter 2 and higher mode are processed into overall structure by circular waveguide 13, bimodulus corrugated horn 1 is screwed with exciter 2 and is connected, bimodulus corrugated horn 1 is processed into wave groove 19 structures, and wave groove 19 structure internal orifices are connected with the higher mode propagates light wall circular waveguide 12 output ports butt joint of exciter 2.
The purpose of this utility model can also reach by following measure
The length dimension 6 of each coupling cavity 4 of 1 to 5 coupling cavity 4 of the utility model is that 8 to 14 millimeters, width dimensions 7 are that 3 to 8 millimeters, depth dimensions 8 are 1 to 6 millimeter, and the distribution angle 11 between each coupling cavity 4 and the coupling cavity 4 is 30 to 60 degree.
The length dimension 9 of each coupling aperture 5 of 1 to 5 coupling aperture 5 of the utility model is that 7 to 12 millimeters, width dimensions 10 are 0.5 to 4 millimeter.
The waveguide longitudinal length size 14 of the higher mode propagates light wall circular waveguide 12 of the utility model exciter 2 is 20 to 38 millimeters, and waveguide diameter dimension 15 is 20 to 25 millimeters, and higher mode is 16 to 19 millimeters by the waveguide diameter dimension 16 of light wall circular waveguide 13.
The groove depth size 17 of first wave groove 19 of the utility model bimodulus corrugated horn 1 is that 9 to 12 millimeters, well width size 18 are 2 to 5 millimeters.
The utility model is compared background technology following advantage:
1. the utility model makes in the corrugated horn and can transmit main mould HE simultaneously owing to adopted bimodulus corrugated horn 1 and exciter 2 structures to do the corrugated horn feed
11Mould and higher mode HE
21The electromagnetic wave of two kinds of patterns of mould, main mould produces axisymmetric radiation beam, by its irradiation level of suitable control to the single-offset parabolic reflector antenna edge, guaranteed that antenna has high-gain and low sidelobe performance, antenna efficiency reaches 65%～70%, and antenna sidelobe satisfies the 29-251g θ networking technical specification of International Satellite Organization's regulation.And higher mode HE
21Produce by exciter, by its amplitude of suitable control with respect to the relative phase difference of main mould, make its radiation field offset the cross polarization radiation field that single-offset parabolic reflector antenna produces owing to the asymmetry of its structure, thereby the cross polarization level of antenna is reduced significantly, at the transmitting terminal of Ku frequency range (in the bandwidth of the 500MHz of 14GHz～14.5GHz), the cross polarization peak level is lower than-30dB (with respect to the main beam maximum) under the two-wire polarization operating state, be lower than-33dB in the main beam 1dB point range, satisfy international fully, the antenna cross-polarization networking technical specification of domsat organization prescribed
2. the utility model assembly structure parts are few, therefore simple in structure, be convenient to processing and manufacturing and batch process, with low cost, be suitable for having high-gain in the satellite communication system, the single-offset parabolic reflector antenna of the little F/D focal length/diameter of low secondary lobe, low-cross polarization performance does the corrugated horn feed source device.
Following structure drawings and Examples are done the utility model and are described in further detail.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the A-A direction cut-away view of the utility model exciter 2.
With reference to Fig. 1, Fig. 2, the utility model is made of by exciter 2, the chamber cover plate 3 of light wall circular waveguide 13 structures bimodulus corrugated horn 1, higher mode propagates light wall circular waveguide 12 and the higher mode of wave groove 19 structures.Wherein process 1 to 5 coupling cavity 4 structure on higher mode propagates light wall circular waveguide 12 circle wall of exciter 2,1 to 5 coupling aperture 5 structure of processing between 1 to 5 coupling cavity 4 and higher mode propagates light wall circular waveguide 12 circumferential inner walls, the higher mode propagates light wall circular waveguide 12 of exciter 2 and higher mode are processed into overall structure by light wall circular waveguide 13.The effect of exciter 2 is the TE that produce in the exciter
21The higher mode electromagnetic wave signal.Embodiment exciter 2 adopts commercially available aluminium bar material two ends to be processed into flange plate structure, be convenient to connection, the higher mode propagates light wall circular waveguide 12 of circular cylindrical tubular waveguide structure is processed in the left part of exciter 2 inside, the higher mode of circular cylindrical tubular waveguide structure is processed into by light wall circular waveguide 13 in the right part of exciter 2 inside, the waveguide bore dia size 15 of higher mode propagates light wall circular waveguide 12 is 20 to 25 millimeters, waveguide pore longitudinal length size 14 is 20 to 38 millimeters, the waveguide bore dia of embodiment higher mode propagates light wall circular waveguide 12 is made into 21 millimeters, longitudinal length size 14 is made into 22 millimeters, higher mode is 16 to 19 millimeters by the waveguide bore dia size 16 of light wall circular waveguide 13, embodiment waveguide bore dia size 16 is made into 17 millimeters, end the waveguide bore dia size of the waveguide bore dia size of light wall circular waveguide 13 less than higher mode propagates light wall circular waveguide 12 in the making, its effect is to prevent that the higher mode of excitation in the higher mode propagates light wall circular waveguide 12 is to higher mode transmission in light wall circular waveguide 13.
1 to 5 coupling cavity 4 of processing on higher mode propagates light wall circular waveguide 12 circle wall of the utility model exciter 2,1 to 5 coupling cavity 4 and between higher mode propagates light wall circular waveguide 12 circumferential inner walls 1 to 5 coupling aperture 5 of processing, its effect is to produce a TE in higher mode propagates light wall circular waveguide 12
21The higher mode electromagnetic wave.The length dimension 6 of each coupling cavity 4 is that 1 to 6 millimeter, width dimensions 7 are 3 to 8 millimeters, and depth dimensions 8 is 1 to 6 millimeter, and the distribution angle 11 between coupling cavity 4 and the coupling cavity 4 is 30 to 60 degree.The length dimension 9 of each coupling aperture 5 is that 7 to 12 millimeters, width dimensions 10 are 0.5 to 4 millimeter.Embodiment processes 2 coupling cavitys 4 and 2 coupling apertures 5 on exciter 2 circle wall, the length dimension 6 of each coupling cavity 4 is processed into 9 millimeters, width dimensions 7 is processed into 4 millimeters, depth dimensions 8 and is processed into 4 millimeters, between two coupling cavitys 4 on higher mode propagates light wall circular waveguide 12 tube walls distribution angle 11 be 40 degree.Coupling aperture 5 length dimensions 9 of processing are processed into 5 millimeters, width dimensions 10 and are processed into 1 millimeter in coupling cavity 4.The degree of depth of coupling aperture 5 is promptly processed rectangular coupling aperture structure until getting through inwall on inwall.
The utility model bimodulus corrugated horn 1 is screwed with exciter 2 and is connected.Embodiment is fixedlyed connected installation to the left port ring flange of exciter 2 with screw with the outer wall of bimodulus corrugated horn 1, and the waveguide mouth of pipe of the higher mode propagates light wall circular waveguide 12 of exciter 2 is docked with the ripple notch of bimodulus corrugated horn 1.First wave groove 19 of bimodulus corrugated horn 1, promptly its groove depth size 17 of first wave groove of docking with higher mode propagates light wall circular waveguide 12 waveguides is that 9 to 12 millimeters, well width size 18 are 2 to 5 millimeters, and first wave groove 19 depth dimensionses 17 of embodiment bimodulus corrugated horn are processed into 10 millimeters, well width size 18 and are processed into 3 millimeters.The inner diameter size of first wave groove is consistent with the waveguide bore dia size 15 of higher mode propagates light wall circular waveguide 12.With the main mould TE that guarantees to transmit in the higher mode exciter
11Mould and higher mode TE
21Import in the bimodulus corrugated horn to the mould areflexia, and change into the interior main mould HE of corrugated horn
11Mould and higher mode HE
21Mould.The utility model chamber cover plate 3 is screwed on coupling cavity 4, and its effect is to make coupling cavity 4 constitute the cavity body structure of a sealing, and embodiment adopts the aluminium sheet material of 2 millimeters thick to process.Be processed into the wave groove structure in the utility model bimodulus corrugated horn 1 its bellmouth orifice, its effect is to make feed produce rotational symmetric radiation beam, has high-gain and low sidelobe performance to guarantee antenna.Embodiment adopts commercially available aluminium bar material self-control to be processed into the corrugated horn of wave groove structure.
The concise and to the point operation principle of the utility model is as follows: the main mould TE of linear polarization (perpendicular polarization or horizontal polarization)
11The mould signal is by the waveguide mouth of pipe input of higher mode by light wall circular waveguide 13, be positioned at 1 to 5 coupling cavity 4 that is processed with 1 to 5 coupling aperture 5 on higher mode propagates light wall circular waveguide 12 walls and is attached thereto, the exciter that coupling aperture 5 and coupling cavity 4 are formed has encouraged higher mode TE
21Mould, this higher mode higher mode on the right are in cut-off state in the circular waveguide, can not transmit to the right, but it can and main mould TE
11Mould is transmission left together, in the input bimodulus corrugated horn 1, and the main mould TE in the higher mode propagates light wall circular waveguide 12
11With higher mode TE
21Change into the main mould HE in the corrugated horn respectively
11With higher mode HE
21Signal, and radiate from bimodulus corrugated horn 1 aperture plane with suitable amplitude, phase relation.The diameter dimension of bellmouth orifice depends on for the bonding offset parabolic antenna has high efficiency and the required edge illumination level of low sidelobe performance, and the higher mode HE of transmission in the corrugated horn
21Mould, by suitable control its with respect to main mould HE
11The amplitude of mould and phase difference, make its radiation field offset the cross polarization radiation field that single-offset parabolic reflector antenna produces because of the asymmetry of its structure, thereby reduce the cross polarization radiation level of antenna significantly, satisfy antenna networking technical specification international, the domsat organization prescribed.
Claims (5)
1. corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics, it comprises the bimodulus corrugated horn (1) of wave groove (19) structure, chamber cover plate (3), it is characterized in that also comprising the exciter (2) that constitutes by light wall circular waveguide (13) by higher mode propagates light wall circular waveguide (12) and higher mode, wherein process 1 to 5 coupling cavity (4) structure on higher mode propagates light wall circular waveguide (12) circle wall of exciter (2), processing 1 to 5 coupling aperture (5) structure between 1 to 5 coupling cavity (4) and higher mode propagates light wall circular waveguide (12) circumferential inner wall, chamber cover plate (3) is screwed on coupling cavity (4), the higher mode propagates light wall circular waveguide (12) of exciter (2) and higher mode are processed into overall structure by circular waveguide (13), bimodulus corrugated horn (1) is screwed with exciter (2) and is connected, bimodulus corrugated horn (1) is processed into wave groove (19) structure, and wave groove (19) structure internal orifice is connected with higher mode propagates light wall circular waveguide (12) the output port butt joint of exciter (2).
2. a kind of corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics according to claim 1, the length dimension (6) that it is characterized in that each coupling cavity (4) of 1 to 5 coupling cavity (4) is that 8 to 14 millimeters, width dimensions (7) are that 3 to 8 millimeters, depth dimensions (8) are 1 to 6 millimeter, and the distribution angle (11) between each coupling cavity (4) and the coupling cavity (4) is 30 to 60 degree.
3. a kind of corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics according to claim 1 and 2, the length dimension (9) that it is characterized in that each coupling aperture (5) of 1 to 5 coupling aperture (5) are that 7 to 12 millimeters, width dimensions (10) are 0.5 to 4 millimeter.
4. a kind of corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics according to claim 3, the waveguide longitudinal length size (14) that it is characterized in that the higher mode propagates light wall circular waveguide (12) of exciter (2) is 20 to 38 millimeters, waveguide diameter dimension (15) is 20 to 25 millimeters, and higher mode is 16 to 19 millimeters by the waveguide diameter dimension (16) of light wall circular waveguide (13).
5. a kind of corrugated horn feed that improves the offset parabolic antenna cross polarization characteristics according to claim 4, the groove depth size (17) that it is characterized in that first wave groove (19) of bimodulus corrugated horn (1) are that 9 to 12 millimeters, well width size (18) are 2 to 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201709 CN2462555Y (en) | 2001-01-20 | 2001-01-20 | Corrugated horn feed source for improving offset paraboloid antenna crossing polarization characteristics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01201709 CN2462555Y (en) | 2001-01-20 | 2001-01-20 | Corrugated horn feed source for improving offset paraboloid antenna crossing polarization characteristics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2462555Y true CN2462555Y (en) | 2001-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01201709 Expired - Lifetime CN2462555Y (en) | 2001-01-20 | 2001-01-20 | Corrugated horn feed source for improving offset paraboloid antenna crossing polarization characteristics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2462555Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337707A (en) * | 2013-05-10 | 2013-10-02 | 中国电子科技集团公司第五十四研究所 | Double-slot-depth tri-band differential mode tracking feed source and design method thereof |
| CN106450780A (en) * | 2016-11-21 | 2017-02-22 | 中国科学院国家空间科学中心 | Dual-band corrugated horn antenna with single groove-deep structure |
-
2001
- 2001-01-20 CN CN 01201709 patent/CN2462555Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103337707A (en) * | 2013-05-10 | 2013-10-02 | 中国电子科技集团公司第五十四研究所 | Double-slot-depth tri-band differential mode tracking feed source and design method thereof |
| CN103337707B (en) * | 2013-05-10 | 2015-12-09 | 中国电子科技集团公司第五十四研究所 | The dark three frequency range differential modes of double flute follow the tracks of feed and method for designing thereof |
| CN106450780A (en) * | 2016-11-21 | 2017-02-22 | 中国科学院国家空间科学中心 | Dual-band corrugated horn antenna with single groove-deep structure |
| CN106450780B (en) * | 2016-11-21 | 2019-07-09 | 中国科学院国家空间科学中心 | A kind of two-band corrugated horn of list groove depth structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110120 Granted publication date: 20011128 |