Polarizing separating device for broadband signal of orthogonal off-set feeding parabolic antenna and separating method of polarizing separating device
A parabolic antenna, polarization separation technology, applied in the field of antenna feeder system, can solve problems such as difficult application, narrow polarization orthogonalizer frequency band, etc., achieve low side lobe level, wide operating frequency band, and high polarization isolation. Effect
Inactive Publication Date: 2015-04-08
THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP
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Problems solved by technology
The commonly used polarization orthogonalizer is this kind of device, but the frequency band of the polarization orthogonalizer is generally 20% narrow, so it is difficult to apply it here
Method used
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Embodiment 1
[0023] A broadband signal polarization separation device for orthogonally biased parabolic dish antennas, such as image 3 As shown, it includes a grid, a feed horn A, a feed horn B, and a parabolic reflector. The vertically placed grid is placed between the feed horn B and the parabolic reflector with an inclination of 45 degrees. The above feed horn A and The feed horn B is mirror-symmetrical with respect to the grid, the grid is placed on the symmetry axis of the feed horn B and the horizontal distance from the center of the grid to the feed horn B is 67mm.
[0024] Further, the above-mentioned grid reflects the electromagnetic wave whose polarization direction is parallel to the grid, and allows the electromagnetic wave whose polarization direction is perpendicular to the grid to pass through, the feed source speaker A receives the atmospheric radiation signal whose polarization direction is parallel to the grid, and the feed source speaker B Atmospheric radiation signals ...
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Abstract
The invention discloses a polarizing separating device for a broadband signal of an orthogonal off-set feeding parabolic antenna and a separating method of the polarizing separating device and relates to the field of an antenna feeder system. The polarizing separating device comprises a grid, a feed source horn A, a feed source horn B and a parabolic reflecting plane, wherein the grid is inclined for 45 degrees and is arranged between the feed source horn A and the feed source horn B; the feed source horn A and the feed source horn B are mirror symmetrical about each other relative to the grid; a grid reflecting polarizing direction is parallel to an electromagnetic wave of the grid; the electromagnetic wave with the polarizing direction vertical to the grid is permitted to pass through; an atmospheric radiation signal with the polarizing direction parallel to the grid is received by the feed source horn A; the atmospheric radiation signal with the polarizing direction vertical to the grid is received by the feed source horn B. According to the invention, the grid is utilized to perform polarizing separation on the broadband signal, so that the simultaneous reception and polarizing separation for an ultra wideband signal can be realized; the orthogonal off-set feeding antenna has the advantages of wide working frequency band, high polarizing separating degree, low minor lobe level, and the like; a technical support is supplied to a radiometer for normally receiving the atmospheric radiation signal.
Description
technical field [0001] The invention relates to the field of antenna feeder systems, in particular to a device for separating polarization of broadband signals of an orthogonally biased parabolic dish antenna and a method for separating it. Background technique [0002] The ground-based microwave radiometer (Microwave Radiometer) is a meteorological observation device based on atmospheric microwave remote sensing technology. By simultaneously receiving the radiation signals of the V-band atmospheric oxygen window (51GHz-59GHz) and the K-band atmospheric water vapor window (22GHz-31GHz), the inversion obtains the tropospheric atmospheric temperature, humidity profile, atmospheric column integral water vapor volume, and atmospheric column integral cloud water. moisture content etc. In order to ensure that the weak signal radiated by the atmosphere is effectively received, the parabolic antenna feeder with high gain characteristics is usually selected as the receiving unit. ...
Claims
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Login to View More IPC IPC(8): H01Q15/24
Inventor 于永杰张志国曹培培晁坤
Owner THE 22ND RES INST OF CHINA ELECTRONICS TECH GROUP CORP