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Capacitive-coupling broadband satellite navigation antenna

A technology of satellite navigation antenna and capacitive coupling, applied in the field of satellite navigation antenna, can solve the problems of high antenna cost, high quality, narrow bandwidth, etc.

Inactive Publication Date: 2019-05-03
SHANGHAI HUACE NAVIGATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution not only has high antenna cost, high quality, and relatively narrow bandwidth, but also the antenna gain drops significantly at the sideband far away from the design center frequency point.

Method used

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  • Capacitive-coupling broadband satellite navigation antenna
  • Capacitive-coupling broadband satellite navigation antenna
  • Capacitive-coupling broadband satellite navigation antenna

Examples

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Embodiment 1

[0023] The present invention includes a radiation board 1, a feeding stud 5, a nut 6, an oblique coupling piece 7, a horizontal coupling piece 8 and a printed circuit bottom plate 9; the radiation board 1 is a double-sided printed circuit board, and the front of the radiation board 1 is circular The metal copper clad layer has four circular feed metal sheets 4 on the back, and is connected to the four circular feed metal sheets 4 on the front through metallized via holes 3, and the front circular metal copper clad layer and four circular feed metal sheets There are capacitive coupling gaps 2 between the feeding metal sheets 4 , and oblique coupling sheets 7 and horizontal coupling sheets 8 are uniformly distributed around the radiation sheet 1 .

[0024] In the specific implementation process, the feed stud 5 not only feeds power to the radiant panel 1, but also serves as a fixing function. The top is fixed with a nut 6, and a common metal stud can be used as the feed stud 5. ...

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Abstract

The invention provides a capacitive-coupling broadband satellite navigation antenna. The antenna comprises a radiation panel, a feed stud, a nut, a horizontal coupling piece, an inclined coupling piece and a printed circuit bottom board. The radiant panel is a double-sided printed circuit board, wherein the front surface is a circular metal copper-clad layer, the back surface is provided with fourcircular feed metal pieces, and the four circular feed metal pieces on the back surface are connected with the four circular feed metal pieces on the front surface through the metalized through holes. Capacitive coupling gaps exist between the front circular metal copper-clad layer and the four circular feed metal pieces. According to the invention, the problems of antenna broadband, low cost, phase center elevation difference and the like are well solved, and a design scheme of the capacitive coupling broadband satellite navigation antenna is emphatically provided, thereby achieving the broadband, low cost and light weight of the antenna.

Description

technical field [0001] The invention relates to the field of satellite navigation antennas, in particular to a capacitive coupling broadband satellite navigation antenna. Background technique [0002] With the initial formation of the Beidou-3 satellite navigation system coverage network, the range of Beidou satellite navigation receiving frequency bands has been further broadened, especially the B2 frequency band. In addition to retaining the 1207.14MHz center frequency of Beidou-2, it also increased 1176.45MHz and 1191.795MHz band. With the advancement of science and technology, information such as location and time has become more and more valuable. Applications related to Beidou navigation have been vigorously developed, and the demand for high-precision surveying and mapping, unmanned automatic driving, and unmanned aerial vehicles has been greatly developed. [0003] As the front-end component of the receiver, the performance of the antenna directly affects the perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
Inventor 吕波钟文涛吴鼎
Owner SHANGHAI HUACE NAVIGATION TECH
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