Automatic satellite tracking antenna system for receiving circular polarized wave

Abstract

The invention relates to an automatic satellite tracking antenna system for receiving a circular polarized wave, which is loaded on a moving body; when the moving body moves, the system is also capable of automatically tracking the position of the satellite, and receiving satellite signals of the circular polarized wave; when a polarizer receives the circular polarized wave, the system reduces the loss of the polarized wave, and improves the impedance matching, the axial ratio and axial ratio bandwidth, thereby receiving the high-efficiency circular polarized wave. The automatic satellite tracking antenna system for receiving the circular polarized wave in the invention uses the following rotation connector which has a simple structure, is capable of realizing minimized production, minimizing the rotation radius of the antenna, reducing the torque of the motor, and reducing the capacity of the motor. The system also provides the following antenna structure which minimizes the length of power supply wires, and can prevent the power supply loss of the satellite signals; a planar antenna for receiving the satellite signals can be easily combined with LNB, thereby minimizing the signal loss of the satellite signals during transmission.

Description

technical field [0001] The present invention relates to a satellite tracking antenna system for circularly polarized wave reception. More specifically, it relates to a satellite tracking antenna system for circularly polarized wave reception which is mounted on a moving body and can automatically track the moving body even when the moving body is moving. Satellite position, receiving circular polarization satellite signals. Background technique [0002] Existing mobile body-mounted satellite tracking antenna systems generally include: a rotary connector, which transmits power supplied from the outside to the system; an antenna part, which receives satellite signals; The signal is analyzed to track the position of the satellite; and the motor rotates the antenna part through the control of the above-mentioned control board. [0003] The rotary connector suitable for the existing satellite tracking antenna system is composed of a complex structure in which bearings are insert...

AI Technical Summary

Problems solved by technology

[0003] The rotary connector suitable for the existing satellite tracking antenna system is composed of a complex structure in which bearings are inserted and sealed, and the size of the rotary connector increases, making it difficult to miniaturize the antenna system. Interference phenomenon occurs between them, so there is a problem that the radius of rotation of the antenna part can only be increased, which leads to the problem that the self-weight of the antenna system and the driving torque of the motor increase

[0004] On the other hand, the antenna part suitable for the existing satellite tracking antenna system mostly adopts a parabolic antenna, and the parabolic antenna is bulky, so that the volume of the radome (radome) protecting the antenna part increases unnecessarily, thus there is an antenna The problem of increasing the overall volume, and the feed horn should be accurately located at the focus of the parabolic antenna, but because the moving body moves frequently, from the perspective of the device, the parabolic antenna is used as the moving body Unstable factors exist in the mounted antenna

[0005] In view of the above problems, planar antennas have recently been used instead of parabolic antennas as mobile-mounted antennas. However, in conventional planar antennas, the array of antenna elements is complicated, so it is difficult to form the desired size of the antenna.

[0006] This existing satellite antenna system has a complex structure and complicated control, so the satellite tracking method of this existing satellite antenna system is adopted, and its action and control are complicated, and it is difficult to perform accurate satellite tracking.

[0007] On the other hand, for the existing satellite tracking antenna of this type, since it is developed to receive linear polarization, there is a problem in using the satellite tracking antenna to receive circular polarization satellite signals

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