Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna

A microstrip antenna and dual-polarization technology, which is applied in the direction of resonant antenna and radiating element structure, can solve the problems of low gain and poor directivity of microstrip antenna, and achieve improved antenna gain, increased area, and simple manufacturing process Effect

Inactive Publication Date: 2011-08-10
CHINA ELECTRONICS TECH GRP NO 26 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a miniaturized high-gain single-feed point dual-frequency dual-polarization microstrip antenna for the disadvantages of low gain and poor directivity due to its own structural characteristics of the existing microstrip antenna

Method used

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  • Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna
  • Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna
  • Miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna

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Embodiment Construction

[0021] see image 3 and Figure 5 , the present invention has a single-feed point dual-frequency dual-polarization microstrip antenna, including a base substrate 2 of microwave dielectric ceramics, and a first radiation patch 5 and a second radiation patch 4 are arranged on the upper surface of the substrate substrate 2, and the The lower surface of the base substrate 2 is provided with a conductive grounding plate 8 and a coaxial radio frequency connector 9 . The side wall of the base substrate is covered with an electrode 1, and the electrode 1 is connected with the conductive ground plate 8 to form a grounded electrode, which is called a cavity-backed electrode in the present invention. The first radiating patch 5 , the second radiating patch 4 , and the cavity-back electrode are all made of low-loss conductive silver paste material, which is screen-printed and then sintered. Such as figure 1 and figure 2 As shown, both the first radiating patch 5 and the second radiat...

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Abstract

The invention discloses a miniature high-gain single-feed-point dual-band dual-polarized microstrip antenna, which comprises a substrate, wherein the upper surface of the substrate is provided with a first radiation sticker and a second radiation sticker; the first radiation sticker is positioned in the annular hollow of the second radiation sticker, and the first and second radiation stickers have the same center; the lower surface of the substrate is provided with a conductive grounding plate; a coaxial probe feeder vertically passes through the substrate; the upper end of the coaxial probe feeder is coupled with the first radiation sticker, and the lower end of the coaxial probe feeder is connected with a coaxial radio frequency joint; the coaxial probe feeder is directly connected with the first radiation sticker for electrical coupling; the second radiation sticker is electromagnetically coupled with the first radiation sticker; and the sidewall of the substrate is encased with electrodes which are connected with the conductive grounding plate to form back cavity electrodes. The gain of the dual-band dual-polarized microstrip antenna is increased, and the problem that the antenna gain and volume of the antenna are mutually restricted is solved by increasing the back cavity electrodes connected with the ground plane of the antenna on the premise of not increasing the volume of the dual-band antenna, and the thickness and sectional area of the substrate.

Description

technical field [0001] The invention relates to an antenna, in particular to a miniaturized high-gain single-feed point dual-frequency dual-polarization microstrip antenna used in the communication field. Background technique [0002] At present, the microstrip antenna is composed of a dielectric substrate with a thickness much smaller than the wavelength and metal patches etched on both sides of it. external radiation. Microstrip antenna has the advantages of thin surface, small size, light weight, planar structure, and easy to conform to the surface of missiles, satellites and other carriers. It has been widely used in satellite communications, radar, and remote sensing. However, the structural characteristics of the microstrip antenna itself lead to its disadvantages such as low gain and poor directivity. In order to increase the gain of the microstrip antenna, there are mainly three feasible methods: one is to increase the thickness of the antenna substrate, which ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q9/04H01Q1/36H01Q1/38
Inventor 陈世钗刘光聪蒋洪平傅金桥张龙刘良芳马晋毅唐平刘锦薛伟林廷芬段志奇
Owner CHINA ELECTRONICS TECH GRP NO 26 RES INST
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