Coaxial S/X dual-frequency sharing feed source network

Abstract

The invention discloses a coaxial S / X dual-frequency sharing feed source network. The coaxial S / X dual-frequency sharing feed source network comprises a coaxial horn feed source, wherein the coaxial horn feed source is composed of an S-frequency-band horn and an X-frequency-band horn, the S-frequency-band horn is externally connected with an S-frequency-band feed network, and the X-frequency-band horn is externally connected with an X-frequency-band feed network, arranged in the S-frequency-band horn in a sleeved mode and coaxial with the S-frequency-band horn. Four transmission arms distributed in the form of a cross and used for achieving S-frequency-band signal wave separating are arranged at the bottom of the S-frequency-band horn, and inner cavities of the four transmission arms are communicated with the inner cavity of the S-frequency-band horn. The coaxial S / X dual-frequency sharing feed source network achieves S-frequency-band single-pulse tracking and circular polarization signal receiving and sending and X-frequency-band single-pulse tracking and circular polarization signal receiving, has the advantages of being wide in working band, small in standing wave, large in power capacity, small in consumption, low in sidelobe, good in directional diagram equalization, small in axial ratio and the like and is suitable for a double-reflection-face multi-frequency multi-tracking-satellite communication and control antenna with the length larger than 7.3 m.

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 circular polarization feed. 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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