Multi-mode Satellite Navigation Antenna for Reducing Back Radiation Effect of Feed Network
A feed network, back radiation technology, applied in the field of multi-mode satellite navigation antennas, can solve the problems of narrow operating frequency band, large size, and difficult to conform to, achieve the effect of suppressing back radiation, compact structure, and improving performance
Inactive Publication Date: 2018-10-09
SHENZHEN TIANDING MW TECH CO LTD
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Problems solved by technology
The disadvantages of microstrip antennas are narrow operating frequency band, low elevation gain and poor axial ratio characteristics; the disadvantages of quadrifilar helical antennas are large size and not easy to conform
When the microstrip antenna is used, the performance of the antenna is often affected due to the back radiation problem of the feed network
Method used
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[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of ...
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The invention discloses a multi-mode satellite navigation antenna capable of reducing a backward radiation influence of a supply network. The antenna comprises a laminated structure, a coaxial line joint, a first probe and a second probe, wherein the laminated structure sequentially comprises a first conductive paster working at a first band, a first dielectric substrate, a second conductive paster working at a second band, a second dielectric substrate, an earthing conductive paster, a third dielectric substrate, the supply network and a shielding layer in a hollow structure from the top down. The shielding layer in the hollow structure is arranged on a bottom layer of the laminated structure, so that backward radiation of the supply network (a power divider and a phase shifter) can be effectively inhibited, and the property of the antenna is effectively improved.
Description
technical field [0001] The invention relates to an antenna, in particular to a multi-mode satellite navigation antenna for reducing the influence of back radiation of a feeding network. Background technique [0002] Satellite navigation and positioning system is a new generation of satellite radio navigation and positioning system established with the development of science and technology. It can provide users with real-time, continuous, high-precision and all-weather navigation and positioning information. It has been widely used in military and civilian fields. . The mainstream satellite navigation systems in the world today include the United States' Global Positioning System (GPS), Russia's GLONASS system (GLONASS), the European Union's Galileo system (GALILEO) and my country's Beidou satellite navigation and positioning system (COMPASS). Among them, the market share and awareness of the GPS global satellite system are relatively high, and the terminal industry chain is...
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IPC IPC(8): H01Q1/38H01Q25/04H01Q1/52
Inventor 江荣简佩张小花江方兵
Owner SHENZHEN TIANDING MW TECH CO LTD