A dual-satellite dual-beam s-band satellite communication phased array antenna

Abstract

The invention discloses a double-star double-beam S-band satellite communication phased array antenna, which comprises a double-circularly polarized antenna array, a radio frequency circuit layer, a transmitting and receiving feeding network, and a wave control and power supply board arranged sequentially from top to bottom. The circularly polarized antenna array is composed of multiple dual circularly polarized antenna units, and the radio frequency circuit layer is composed of multiple radio frequency device combinations. , the radio frequency device combination is isolated by a metal strip; the phased array antenna involved in the present invention divides the S frequency band transceiver signal through the internal radio frequency branch, so that it can work at the two frequencies of large S and relay, and divide It can form two beams in time, and can communicate with the big S satellite and relay satellite in time division. The system uses phased array technology for space beam scanning to realize fast tracking of signals.

Description

technical field [0001] The technical field involved in the present invention covers satellite communication, satellite navigation, satellite positioning, remote control and telemetry, etc., and is specifically a double-star double-beam S-band satellite communication phased array antenna. The invention is also particularly suitable for time-sharing communication between the big S and the relay satellite on the moving carrier, and can switch signals between the two satellites according to the specific usage conditions. The invention has the characteristics of fast signal tracking, signal switching, signal capture, signal sending and receiving separation, and the like. Background technique [0002] In the field of satellite communication, S-band satellite communication is an important communication spectrum. There are more and more user terminals working on the S-band multiple access (SMA) link of the relay satellite system. Compared with the Tianlian-1 relay satellite system, ...

AI Technical Summary

Problems solved by technology

[0003] 1. Traditional mechanical tracking antennas, such as reflector antennas and flat panel array antennas, have the characteristics of high gain and low manufacturing cost, but they have great disadvantages in terms of bulkiness, inconvenient disassembly and assembly, and slow tracking speed. The tracking speed is slow and cannot be well adapted to the needs of high mobility platforms

[0004] 2. One-dimensional active phased array antennas. Although the antennas of this type have the advantage of relatively low cost, they are subject to many restrictions in the field of satellite communications. For example, they are still bulky and still require azimuth Disadvantages of Mechanical Tracking

[0005] 3. The traditional single-satellite single-beam active phased array antenna has the advantages of fast beam tracking and advanced system, but it does not have the ability of dual-satellite tracking, and users cannot switch between inter-satellite links as needed, so that It loses the ability to reuse functions

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