Electromagnetic coupling feed navigation transmitting-receiving antenna of 1st generation of Beidou satellite

Abstract

The invention relates to an electromagnetic coupling feed navigation transmitting-receiving antenna of the 1st generation of Beidou satellite. The antenna comprises an upper dielectric plate, a lower dielectric plate, a disk-shaped coupling copper sheet and a cross-shaped coupling copper sheet, wherein the upper dielectric plate is arranged over the lower dielectric plate in parallel with the lower dielectric plate, an air layer is formed between the upper and the lower dielectric plates separately, the upper and lower surfaces of the upper dielectric plate are provided with an antenna radiation patch of the S frequency range and an antenna radiation patch of the L frequency range respectively, the lower surface of the lower dielectric plate is provided with a ground plate, the disk-shaped coupling copper sheet and the cross-shaped coupling copper sheet are arranged in the same height of the air layer and parallel with the upper dielectric player, the circular center of the disk-shaped coupling copper sheet is connected with a first feed probe, and one feed end of the cross-shaped coupling copper sheet is connected with a second feed probe. The antenna can realizes the positioning and short message communications of the first generation of Beidou satellite, has the advantages of low profile, high gain, low cost, wide broadband and allowable processing errors, and can be well applied to Beidou satellite terminal equipment.

Description

technical field [0001] The invention relates to an electromagnetic coupling feeding Beidou first-generation satellite navigation transceiver antenna. Background technique [0002] The Beidou satellite navigation system is a global satellite positioning and communication system independently developed by my country. With the gradual establishment and improvement of the Beidou satellite navigation system, the positioning and communication technology based on the Beidou satellite navigation system is developing rapidly, and has penetrated into various fields and is widely used. Used in military, transportation, water conservancy, emergency rescue and disaster relief and other related applications. Since 2002, some domestic enterprises have invested a lot of manpower and material resources in the research of Beidou user machine antenna. The Beidou navigation receiver antenna has high index requirements in terms of return loss, low elevation gain, and isolation between transceive...

AI Technical Summary

Problems solved by technology

In order to meet the high index requirements of the Beidou antenna, the antennas currently on the market usually use high-frequency plates with low loss tangent and high dielectric constant. The materials are relatively expensive, and most antennas have small bandwidths and require high processing accuracy.

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