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Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system

A microstrip antenna and four-helix technology, applied in the field of four-helix distributed loading oscillator microstrip antenna, can solve the problems of insufficient bandwidth, small gain, poor directivity, etc., and achieve the effects of low cost, high gain, and easy integration

Inactive Publication Date: 2012-11-07
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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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  • Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system
  • Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system
  • Quadruple spiral distribution loading oscillator microstrip antenna applied to Beidou system

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0023] see figure 1 , the embodiment of the present invention is provided with a substrate 1, and the two sides of the substrate 1 are covered with copper. The upper surface of the substrate 1 is provided with a four-helical vibrator arm structure, and each side of the four-helical vibrator arm structure is wound to form a spiral vibrator. The vibrator is provided with a loading hole 2 and a feeding hole 3, and the four-helical vibrator arm structure wraps around 720° to the center of each side; the lower surface of the substrate 1 is a grounding plate, and the grounding plate is connected to the outer core of the feeding copper axis. The loading hole 2 is connected with the inner core of the feed copper axis.

[0024] The substrate 1 is a double-sided copper-plated ceramic dielectric substrate, and the length of the substrate is 40mm, the width is 40mm, and...

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Abstract

The invention discloses a quadruple spiral distribution loading oscillator microstrip antenna applied to a Beidou system and relates to a microstrip patch antenna. The quadruple spiral distribution loading oscillator microstrip antenna applied to the Beidou system is low in echo loss, low in interference, high in gain, high in symmetry, high in integration level and miniature and has the directed radiation characteristics. The quadruple spiral distribution loading oscillator microstrip antenna applied to the Beidou system is provided with a substrate, wherein copper is coated on two sides of the substrate; the upper surface of the substrate is provided with a quadruple spiral oscillator arm structure; the sides of the quadruple spiral oscillator arm structure form a spiral oscillator in a rewinding form; a loading hole and a feed hole are formed in the spiral oscillator; the quadruple spiral oscillator arm structure is rewound by 720 degrees towards the center of each side; the lower surface of the substrate is provided with a grounding plate; the grounding plate is connected with an outer core of a feed copper axis; and the loading hole is connected with an inner core of the feed copper axis.

Description

technical field [0001] The invention relates to a microstrip patch antenna, in particular to a microstrip antenna with four helical distributed loading dipoles applied to the Beidou system. Background technique [0002] Since 2000, China has successfully launched 4 Beidou-1 navigation and positioning satellites and 10 Beidou-2 navigation and positioning satellites. As an indispensable part of the satellite communication system, the antenna directly determines the performance of the satellite communication system. 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 the antenna to have good working performance on each frequency. In addition, since satellite communication signals are circularly polarized w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q13/08
Inventor 游佰强胡宝法陈苗苗周建华周涛薛团辉刘慧梁
Owner XIAMEN UNIV
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