Broadband and high low-elevation gain first-generation beidou satellite navigation transceiver antenna

Abstract

The invention relates to a broadband and high low-elevation gain first-generation beidou satellite navigation transceiver antenna, which comprises two layers of dielectric plates, two coupling round copper sheets and four grounding rectangular copper sheets, wherein an antenna radiation patch is arranged on the lower surface of the upper layer of dielectric plate; a grounding plate is arranged on the upper surface of the lower layer of dielectric plate; a feed network is arranged on the lower surface of the lower layer of dielectric plate; the upper layer of dielectric plate and the lower layer of dielectric plate are fixed through plastic screws; an air layer with a certain length is arranged between the upper layer of dielectric plate and the lower layer of dielectric plate; the coupling round copper sheets are arranged in the air layer and are parallel to the dielectric plates; a feed point is arranged at the circle center of each coupling round copper sheet; the feed points are connected with the feed network through feed probes; the four grounding rectangular copper sheets are respectively attached to the periphery of the antenna; and one side of each grounding rectangular copper sheet is connected with the grounding plate. The broadband and high low-elevation gain first-generation beidou satellite navigation transceiver antenna has the advantages of low profile, large bandwidth, wide wave beam and low cost on the basis of dual-frequency characteristics and can be well applied to beidou navigation terminal equipment.

Description

technical field [0001] The invention relates to a first-generation Beidou satellite navigation antenna for transmitting and receiving frequency bands, in particular to a broadband high-low elevation angle gain Beidou first-generation satellite navigation transmitting and receiving 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. At present, some multi-frequency antennas on the market adopt the design scheme of stacked structure, and the antenna section is large, which inc...

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Problems solved by technology

At present, some multi-frequency antennas on the market adopt the design scheme of stacked structure, and the antenna section is large, which increases the volume of the navigation terminal equipment; most antennas use single-point feeding, which has the disadvantage of small axial ratio bandwidth; most antennas on the market do not have Specially consider the design scheme of low elevation gain, the beam of the antenna is not wide enough

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