Multi-frequency-point satellite navigation terminal antenna

Abstract

The invention discloses a multi-frequency-point satellite navigation terminal antenna which is applicable to a plurality of navigation terminal systems. The multi-frequency-point satellite navigation terminal antenna comprises six layers of microwave dielectric substrates, three metal irradiating sheets, a parasitic sticking plate, six T type metal columns, six dielectric columns, six dielectric washers, three 3dB bridges, a floor and a positioning bolt; the six layers of microwave dielectric substrates are sequentially overlapped from top to bottom; the parasitic sticking sheet is fixed on the first layer of microwave dielectric substrate; every two T type metal columns 4 are arranged as a group for performing feed to one metal irradiating sheet. According to the multi-frequency-point satellite navigation terminal antenna, the antenna with overlapping structure is adopted, so that the working frequency of the antenna can reach higher frequency range, and four modes, namely GPS (Global Position System) mode, GALILEO mode, GLONASS (Global Navigation Satellite System) mode and Beidou mode, can be covered; and meanwhile, the capacitive coupling feed mode is carried out on the radiating sheets, so that the bandwidth is effectively increased.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a multi-frequency point satellite navigation terminal antenna that can be applied to various navigation terminal systems. Background technique [0002] In order to solve the problems of single system coverage gap and low navigation accuracy, multi-mode collaborative work has become a trend in the future satellite navigation system. The multi-mode satellite navigation terminal antenna is required to be able to cover the four modes of GPS, GALILEO, GLONASS and Beidou. The working frequency band of the antenna should meet the broadband requirements of 1164-2491MHz. The radiation direction characteristic is characterized by wide beam and the polarization mode is right-handed. circular polarization. [0003] At present, most of the multi-frequency satellite navigation terminal antennas widely used at home and abroad adopt a stacked structure to realize broadband operation, and the f...

AI Technical Summary

Problems solved by technology

These antennas give the design of satellite navigation antennas with broadband or dual frequency points, but the frequencies are all concentrated in the range of 1.15-1.65GHz, and no higher frequencies are involved

[0005] After searching, there is no relevant literature report about satellite navigation terminal antenna with high frequency and wide beam, which can be used for various navigation terminals

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