Satellite dual-band antenna

Abstract

The present invention discloses a satellite dual-band antenna. The satellite dual-band antenna comprises a high-frequency antenna radiator, a low-frequency antenna radiator, a first probe, a second probe and an antenna pedestal, the high-frequency antenna radiator comprises a first dielectric body and a high-frequency antenna radiation surface being subjected to laser etching at the outer surfaceof the first dielectric body, the low-frequency antenna radiator comprises a second dielectric body and a low-frequency antenna radiation surface being subjected to laser etching at the outer surfaceof the second dielectric body, the bottom portion of the antenna pedestal is connected with a PCB, the upper portion of the antenna pedestal is provided with a cavity, the high-frequency antenna radiator and the low-frequency antenna radiator are stacked in the cavity, the high-frequency antenna radiator is located above the low-frequency antenna radiator, the high-frequency antenna radiator and the low-frequency antenna radiator perform feed through the first probe and the second probe, excitation amplitudes of the first probe and the second probe are the same, and the excitation phase difference of the first probe and the second probe is 90 degrees. The satellite dual-band antenna relates to the technical field of communication, is higher in reliability, is provided with the antenna pedestal, adds antenna pattern beam width and achieves miniaturization.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a satellite dual-frequency antenna. Background technique [0002] On August 6, 2016, my country successfully launched the Tiantong-1 01 satellite into space with the Long March 3B carrier rocket at the Xichang Satellite Launch Center. At present, the satellite is undergoing on-orbit testing, and the ground application and operation control system are being integrated The joint test, the whole system will be officially opened and run soon. The traditional dual-band antenna generally has two characteristics. First, it adopts the form of FPC, which generally has a relatively high height, and the FPC incoming material is unstable, and the thickness may be uneven, which makes it impossible to mass produce; secondly, it adopts the form of ordinary microstrip antenna. The overall gain of the antenna is high, but the lobe width is not wide enough to meet the requirements of use, an...

AI Technical Summary

Problems solved by technology

The traditional dual-band antenna generally has two characteristics. First, it adopts the form of FPC, which generally has a relatively high height, and the FPC incoming material is unstable, and the thickness may be uneven, which makes it impossible to mass produce; secondly, it adopts the form of ordinary microstrip antenna. The overall gain of the antenna is high, but the lobe width is not wide enough to meet the requirements of use, and it is also not conducive to miniaturization

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