Double-frame and notched four-bridge bridging microstrip antenna applied to compass system

A technology of microstrip antenna and notch, which is applied to the antenna, the device that enables the antenna to work in different bands at the same time, the structural form of the radiation element, etc., can solve the problems of surface wave existence, poor directivity, insufficient bandwidth, etc., and achieve low cost and improved Frequency offset, easy-to-integrate effects

Inactive Publication Date: 2013-07-10
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Microstrip antenna is a new type of antenna gradually developed in the past 30 years. It has been widely used because of its inherent advantages, but it also has disadvantages such as small gain, poor directivity, existence of surface waves, and insufficient bandwidth.

Method used

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  • Double-frame and notched four-bridge bridging microstrip antenna applied to compass system
  • Double-frame and notched four-bridge bridging microstrip antenna applied to compass system
  • Double-frame and notched four-bridge bridging microstrip antenna applied to compass system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0033] see figure 1 and 2 , the embodiment of the present invention is provided with a double-sided copper-plated ceramic dielectric substrate 1, which is 40.5 mm long, 40.5 mm wide, and 3 mm high. The two sides of the ceramic dielectric substrate 1 are covered with copper, and the upper surface of the good conductor is processed into an inner frame 2 and an outer frame 4 with cut angles of 3 and 5, and the gap between the inner frame 2 and the outer frame 4 is 0.5 mm, and A symmetrical structural radiation patch spanned by four bridges 7, wherein rectangular loading cutouts 6 are evenly distributed on the inner edge of the outer frame. The length of the rectangular loading slit 6 is 2.0±0.01mm, the width is 1.25±0.01mm, and the distance between them is 2.0±0.01mm. The lower surface of the ceramic dielectric substrate 1 is a ground plane with a complete st...

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Abstract

The invention discloses a double-frame and notched four-bridge bridging microstrip antenna applied to a compass system, and relates to a microstrip patch antenna. The double-frame and notched four-bridge bridging microstrip antenna applied to the compass system is low in return loss, high in gain, small in interference, high in symmetrical characteristic, high in integration density and small in size, has a directed radiation characteristic and is compatible with a compass frequency range satellite positioning system. The double-frame and notched four-bridge bridging microstrip antenna comprises a base plate. Metal layers are coated on the two surfaces of the base plate, wherein one metal layer on one surface is machined to an outer frame and double frames of an internal radiation paster, wherein the outer frame is provided with cut corners, rectangular notches are arranged on the inner edge of the outer frame, and a symmetrical structure of the inner radiation paster and an external radiation paster is formed by a four-bridge bridging manner inside and outside. The other metal layer on the other surface is an earth plate. Further miniaturization of the antenna is achieved, and requirements of a compass satellite communication system can be well met by using of the notched four-bridge bridging microstrip patch antenna structure and applying of a distribution loading technique to a radiation element and through comprehensive optimization of serial technologies.

Description

technical field [0001] The invention relates to a microstrip patch antenna, in particular to a double-frame, notched and four-bridge-spanned microstrip antenna applied to the Beidou system. Background technique [0002] Since 2000, China has successfully launched a number of Beidou-1 navigation and positioning satellites and Beidou-2 navigation and positioning satellites, has completed the Beidou-1 navigation test system, and is building a Beidou-2 satellite positioning system covering the world. As an indispensable part of the satellite communication system, the antenna directly determines the performance of the satellite communication system. [0003] my country's Beidou-2 satellite communication system works in the B1 and B3 frequency bands, the uplink (transmission frequency) L frequency band and the downlink (reception frequency) S frequency band. Dual-frequency or multi-frequency is usually used to compensate the delay caused by ionospheric propagation, which requires...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q5/00H01Q15/24H01Q13/08H01Q5/20
Inventor 游佰强胡宝法金婉晴周建华赵阳梁冰洋周涛
Owner XIAMEN UNIV
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