A coaxial s/x dual frequency shared feed source network

Abstract

The invention discloses a coaxial S / X dual-frequency shared feed source network, comprising a coaxial horn feed source composed of an S-band horn and an X-band horn, the S-band horn is externally connected to the S-band feed network, and the X-band horn is externally connected to the X-band feed network; the X-band speaker is nested in the S-band speaker and coaxial with the S-band speaker; the bottom of the S-band speaker is provided with four transmission arms distributed in a cross shape and used to realize S-band signal splitting. In addition, the inner cavities of the four transmission arms are all in communication with the inner cavity of the S-band horn. The invention realizes the functions of S-band monopulse tracking and sending and receiving circularly polarized signals, X-band monopulse tracking and receiving circularly polarized signals, and has the advantages of wide operating frequency band, small standing wave, large power capacity, small loss, low side lobe, Excellent performance such as good pattern equalization and low axial ratio, suitable for multi-frequency multi-tracking satellite communication and measurement and control antennas with double reflectors above 7.3m.

Description

technical field [0001] The invention relates to a coaxial S / X dual-frequency shared feed source network in the field of satellite communication and measurement and control, which is suitable for large-caliber double-reflector antennas requiring dual-frequency sharing and dual-frequency single-pulse tracking. Background technique [0002] Since the beginning of the new century, with the introduction of new concepts such as global integration and information superhighway, the demand for satellite communication and measurement and control has increased day by day, and higher requirements have been put forward. At the same time, new ideas, new technologies and new processes have also brought about rapid changes in satellite communication and measurement and control technology. As the most basic component of the satellite communication and measurement and control system, the antenna system has also developed rapidly from the initial single frequency band and single polarization t...

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Problems solved by technology

[0004] 1. Five-speaker combination feed network scheme: the advantages are simple design, clear sum-difference signal formation principle, and easy processing and manufacturing; the disadvantage is low feed irradiation efficiency and poor consistency of difference beams between frequency bands; 2. Beam waveguide antenna scheme: The advantages are high irradiation efficiency, good beam consistency, and the feed network is individually designed for each frequency band, which has excellent performance; the disadvantage is that the antenna structure is complex, and design and processing are difficult; 3. The coupling difference signal scheme at the bottom of the corrugated horn groove: the advantage is that the irradiation efficiency is high , beam consistent signal, compact structure; the disadvantage is that the design and processing are difficult, and the bandwidth is narrow

[0005] Chinese Invention Patent (Application No.: 201010532673.3) discloses a S / X dual-frequency shared circularly polarized feed source, and a Chinese Invention Patent (Application No.: 201110182661.7) discloses a S / X dual-frequency shared The feed sources are all coaxial, and can be used for S / X dual-frequency satellite communication and measurement and control antennas, but they cannot form differential beams and do not have monopulse tracking capabilities

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