Small S-band passive phased array antenna with high radiation efficiency

Abstract

A small S-band passive phased array antenna with high radiation efficiency comprises a power supply module, a 4W power amplifier module, a filter module, a beam control module, a phase shifter module and an antenna array, wherein the power supply module supplies power for the 4W power amplifier module, the beam control module and the phase shifter module; the 4W power amplifier module is used for amplifying a radio-frequency signal; the filter module is used for inhibiting out-of-band interference and noise; the beam control module is responsible for calculating the beam pointing of the phased array antenna according to the GPS position and posture information of a user satellite; the phase shifter module is used for controlling the phase of the output signal; the antenna array transmits and outputs the signal. The phased array antenna, disclosed by the invention, has a wide scanning range, controllable beam, high gain, low power consumption and small size, and is capable of controlling the antenna beam pointing through the beam control module.

Description

technical field [0001] The invention relates to a small S-band passive phased array antenna with high radiation efficiency, which is suitable for small satellite S-band signal transmission. Background technique [0002] During the "Twelfth Five-Year Plan" period, my country's aerospace field vigorously developed second-generation navigation and relay satellites, and inter-satellite measurement and control and relay measurement and control, as indispensable systems, have also developed rapidly. The traditional quasi-full-space radiation antenna formed by two half-space radiation antenna arrays cannot meet the requirements of deep space exploration and relay measurement and control because of its low gain. The phased array antenna enhances the strength of the transmitted signal by forming an array of transmitting antennas, and changes the direction of the antenna beam by controlling the amplitude and phase parameters of each unit antenna. It can reduce system power consumption...

AI Technical Summary

Problems solved by technology

[0003] The problem solved by the technology of the present invention is: to overcome the deficiencies of the prior art, to provide a small S-band passive phased array antenna with high radiation efficiency, and to solve the problem that the gain of the small satellite relay measurement and control transmission antenna is not high, which causes the relay terminal The problem of excessive power consumption of the transmitter and difficulty in reducing its size

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