CN2150630Y

CN2150630Y - Satellite television receiving antenna

Info

Publication number: CN2150630Y
Application number: CN 93238314
Authority: CN
Inventors: 易正鸿; 陈幼君; 陈志明; 欧阳惠
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-03-15
Filing date: 1993-03-15
Publication date: 1993-12-22
Anticipated expiration: 2003-03-15

Abstract

The utility model provides a multi-beam, bias feed, three-dimensional and multi-polarization satellite television receiving antenna, which comprises a main reflection surface, a seat stand supporting the main reflection surface and feed source, wherein, the main reflection surface is an annular parabolic surface which forms a parabolic surface in vertical direction and forms a spherical surface in horizontal direction; the feed source is installed on a circular arc-shaped focus line of the annular parabolic surface; the number of the feed source is more than one. The particular number of the feed source can be determined according to the size of the caliber of the main reflection surface, and can be two, three, four, etc.

Description

Satellite television receiving antenna

The utility model relates to a kind of multi-beam, offset-fed, three-dimensional, multipolarization satellite television receiving antenna.

General satellite television receiving antenna no matter be feedforward or rear feed pattern, all is to utilize reflecting curved surface main shaft focusing principle, receives along primary reflection surface main shaft incident electromagnetic wave energy.This satellite television receiving antenna at a time can only receive program or other information that this satellite is transmitted at a satellite.If in the time of will receiving program on another satellite or other information, must the rotary antenna mounting, change the sensing of antenna spindle.China's CN2082464U patent disclosure a kind of big visual field multi-satellite TV programmes reception antenna, because its primary reflection surface is the rotation parabolic cylinder, therefore the number of the feed of installing is restricted on its primary reflection surface, 24 feeds can only be installed at most, therefore make the satellite-signal that can receive simultaneously also be restricted.

The purpose of this utility model is to overcome above-mentioned deficiency and a kind of multi-beam, offset-fed, three-dimensional, multipolarization satellite television receiving antenna is provided.

The utility model provides a kind of multi-beam, offset-fed, three-dimensional, multipolarization satellite television receiving antenna, comprise primary reflection surface, the mounting and the feed of supporting primary reflection surface, primary reflection surface is that annular is parabolic, it is parabolic in vertical direction, be sphere in the horizontal direction, feed is installed on the annular paraboloidal circular arc focal line, and the feed number is more than one.The concrete number of feed is determined according to the caliber size of primary reflection surface, can be two, three, four ..., formation can receive two thus, and three, four ... the multi-beam antenna of satellite-signal.

Above-mentioned primary reflection surface is made of with the tabular reflecting surface of the several piece of fixedlying connected with ring support ring support, can rivet or adopt other modes to connect.The number of tabular reflecting surface is determined by the caliber size of formation primary reflection surface, can be constituted the different primary reflection surface of caliber size thus.

On the paraboloidal circular arc focal line of above-mentioned annular the feed support is arranged, the feed support is fixedlyed connected with the bottom of ring support, and the front portion of feed support has and is with it to have chute on the slide plate by the slide plate of one, and feed is arranged in the chute.

Above-mentioned source feed clip is held in the feed inner shoe, and the feed inner shoe is sleeved in the feed external support piece, and by the feed rotating shaft location of fixedlying connected with feed external support piece, feed external support piece can be threaded or adopt alternate manner to be connected with the feed rotating shaft.The feed rotating shaft places in the feed bearing, and bearing cap location by fixedlying connected with the feed bearing, the feed bearing is fixedlyed connected with the supporting base backing plate, the chute of opening is fixedlyed connected on the slide plate of supporting base backing plate and feed support front portion, feed can move on the circular arc focal line along chute, and makes axial rotation along axis separately, and the feed move mode can be manual as required or automatic, adopt and manually or automatically aim at satellite received signal, just can realize three-dimensional tracking target.Described feed can be pyramid loudspeaker, conical horn, corrugated horn or other feed, if feed is moved along the paraboloidal circular arc focal line of annular, the utility model promptly becomes the multi-beam scanning antenna, if what install on the annular paraboloidal circular arc focal line is several dissimilar feeds, the utility model just can receive the satellite-signal of different polarization, different-waveband, different beams body.

The utility model shifts out focus outside the primary reflection surface if adopt the offset-fed rule to utilize annular paraboloidal part, and the inclined to one side license-master's reflecting surface of feed has so just been eliminated the occlusion effect of feed and support thereof, has increased the effective area of antenna.Receiving equipment can be contained on the antenna holder thus, reduce of the loss of feeder line length high-frequency signal.

The utility model can receive many different channels simultaneously, the satellite-signal of different polarization, and can receive the dualbeam signal (as the Asiasat 1 satellite) of dualbeam satellite simultaneously, can receive C, Kn band satellite signal simultaneously, can receive the synchronous satellite signal of geo-stationary orbit, also can receive other polytype satellite-signal of asynchronous track.The utility model can receive the satellite-signal that distributes in 0 ° to 150 ° scope of the big elliptic arc of geostationary orbit simultaneously, so the utility model is collected the overhead satellites signal for research, and to be used for national defence, military affairs, nation-building, people's lives etc. all be very favourable.

Fig. 1 assembly structure schematic diagram of the present utility model

Fig. 2 is that the A of Fig. 1 is to view

Fig. 3 is that the B of Fig. 1 is to view

The structural representation of Fig. 4 feed inner shoe

The structural representation of Fig. 5 feed external support piece

The structural representation of Fig. 6 feed bearing

The structural representation of Fig. 7 feed rotating shaft

The structural representation of Fig. 8 supporting base backing plate

Accompanying drawing 1～Fig. 8 has described an embodiment of the present utility model.It comprises primary reflection surface (1), the mounting (2) and the feed (3) of supporting primary reflection surface (1), the bore of primary reflection surface (1) is 4 * 2.4m, it is formed for the tabular reflecting surface of several piece (5) of one by ring support (4) with ring support (4) riveted joint, it is parabolic that it is shaped as annular, it is parabolic in vertical direction, is sphere in the horizontal direction, and primary reflection surface (1) is installed on the mounting (2) by common mode.Feed (3) is installed on the annular paraboloidal circular arc focal line by feed support (6), feed support (6) places on the annular paraboloidal circular arc focal line, the bottom of the left end of feed support (6) and ring support (4) is welded to connect, there is the slide plate (7) that is fixed with one with it the front portion of feed support (6), have chute (8) on the slide plate (7), feed (3) is arranged in the chute (8), described feed (3) is a pyramid loudspeaker, number is five, the rectangular waveguide mouth of pyramid loudspeaker is clamped in the feed inner shoe (9), feed inner shoe (9) is by last, two half blocks are formed down, last, have down the rectangular recess (10) that the rectangular waveguide mouth with pyramid loudspeaker matches on two half blocks, the rectangular waveguide mouth of pyramid loudspeaker place feed inner shoe (9) on, down in two half blocks, on it, two half blocks are fixed with one by screw down, thereby pyramid loudspeaker is clamped, feed external support piece (11) is also by last, two half blocks are formed down, on it, all have the semi-circular recesses (12) that matches with feed inner shoe (9) on two half blocks down, tapped through hole (13) is arranged at the bottom of semi-circular recesses (12), feed inner shoe (9) place feed external support piece (11) on, down in two half blocks, on it, two half blocks also are fixed with one by screw down, last, in the tapped through hole of being opened on two half blocks (13) the feed rotating shaft (14) that is threaded is with it arranged down, feed inner shoe (9) is located by feed rotating shaft (14), feed rotating shaft (14) is fixed with one by flat key with bearing cap, bearing cap is fixedlyed connected with feed bearing (15) by screw, unscrews screw and can make bearing cap, feed rotating shaft (14) and feed (3) rotate.The bottom of feed bearing is connected on the supporting base backing plate (16) by screw, and institute's chute of opening (8) is connected by screw on the anterior slide plate (7) of supporting base backing plate (16) and feed support (6).Unscrewing screw can make supporting base backing plate (16) and feed (3) move on the paraboloidal circular arc focal line of annular along chute (8).

Claims

1, a kind of multi-beam, offset-fed, three-dimensional, multipolarization satellite television receiving antenna, comprise primary reflection surface, the mounting and the feed of supporting primary reflection surface, it is characterized in that primary reflection surface is that annular is parabolic, it is parabolic in vertical direction, be sphere in the horizontal direction, feed is installed on the annular paraboloidal circular arc focal line, and the feed number is more than one.

2, multi-beam according to claim 1, offset-fed, three-dimensional, multipolarization satellite television receiving antenna is characterized in that described primary reflection surface is made of with the tabular reflecting surface of the several piece of fixedlying connected with ring support ring support.

3, multi-beam according to claim 1, offset-fed, three, multipolarization satellite television receiving antenna, it is characterized in that on the paraboloidal circular arc focal line of described annular the feed support being arranged, the feed support is fixedlyed connected with the bottom of ring support, the front portion of feed support has and is the slide plate of one with it, have chute on the slide plate, feed is arranged in the chute.

4, multi-beam according to claim 1, offset-fed, three-dimensional, the multipolarization satellite television receiving antenna, it is characterized in that described source feed clip is held in the feed inner shoe, the feed inner shoe is sleeved in the feed external support piece, and feed rotating shaft location by fixedlying connected with feed external support piece, the feed rotating shaft places in the feed bearing, and bearing cap location by fixedlying connected with the feed bearing, the feed bearing is fixedlyed connected with the supporting base backing plate, the chute of opening is fixedlyed connected on the slide plate of supporting base backing plate and feed support front portion, feed can move on the paraboloidal circular arc focal line of annular along chute, and makes axial rotation along axis separately.