Dielectric-loaded quadrifilar helix antenna with omnidirectional, circular polarization, and high gain performances

A medium-loaded, four-arm spiral technology, applied in the direction of the structure of the radiation element, can solve the problems of complex structure of the omnidirectional circularly polarized antenna, high processing precision requirements, difficult adjustment, etc., to achieve light weight, short design cycle, easy tuning effect

Inactive Publication Date: 2011-10-26
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of general omnidirectional circularly polarized antennas, such as complex structure, high processing precision and difficult adjustment, the present invention provides an omnidirect

Method used

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  • Dielectric-loaded quadrifilar helix antenna with omnidirectional, circular polarization, and high gain performances
  • Dielectric-loaded quadrifilar helix antenna with omnidirectional, circular polarization, and high gain performances
  • Dielectric-loaded quadrifilar helix antenna with omnidirectional, circular polarization, and high gain performances

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[0018] The present invention will be further described in detail below in conjunction with the embodiments and the drawings, but the implementation method and the scope of protection of the present invention are not limited to this.

[0019] Such as figure 1 As shown, the antenna structure includes a feed network and a radiating body; the feed network includes a radio frequency coaxial cable inner conductor 1 and an outer conductor 2 located outside the inner conductor 1. The top of the inner conductor 1 is connected to the first metal post 3, and the first metal post 3 is connected to the middle of the first metal strip 6. The outer conductor 2 is provided with a second metal post 4 and a third metal post 5 distributed symmetrically in a radial direction. The tops of the second metal post 4 and the third metal post 5 are connected to the second metal strip 7 and the third metal strip 8 respectively. connection. The radiating body includes a dielectric cylinder 17 arranged outsi...

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Abstract

The invention discloses a dielectric-loaded quadrifilar helix antenna with omnidirectional, circular polarization, and high gain performances. The antenna comprises a feed network and a radiation main body. According to the invention, a radio frequency signal of the feed network is transmitted to a first metal column 3 through an internal conductor 1 of a radio frequency coaxial cable and is transmitted to a second metal column 4, a third metal column 5 through an outer conductor 2; the first metal column 3 feeds power respectively to a first metal helix 9 and a second metal helix 10 on an outer surface of a dielectric cylinder 17 through a first metal tape 6, and the second metal column 4 feeds power to a third metal helix 11 on the outer surface of the dielectric cylinder 17 through a second metal tape 7; and the third metal column 5 feeds power to a fourth metal helix 12 on the outer surface of the dielectric cylinder 17 through a third metal tape 8, the line width of the first to the fourth metal helix 9-12 is gradually thicker from the end part to the tail part. According to the invention, a simple and compact structure is employed, and technical indexes of an antenna are ingeniously realized, wherein the indexes includes omnidirection, circular polarization, and high gain. Besides, the dielectric-loaded quadrifilar helix antenna has advantages of compact structure, small in size, light in weight, low cost, high efficiency, and good adaptability to environment; moreover, the antenna is easy to process and easy to tune.

Description

technical field [0001] The invention relates to the technical field of dielectric-loaded helical antennas, in particular to an omnidirectional circularly polarized high-gain dielectric-loaded four-arm helical antenna. Background technique [0002] Omnidirectional circularly polarized antennas have circularly polarized characteristics in all directions, and have very broad application prospects in communications, radar, electronic countermeasures, telemetry, remote sensing, astronomy, and television broadcasting. In order to achieve a certain coverage, the antenna is required to have a higher gain. Therefore, it is of great practical significance to develop an omnidirectional circularly polarized high-gain antenna. [0003] At present, there are generally two schemes for realizing omnidirectional circularly polarized antennas: multi-antenna and single-antenna. [0004] The multi-antenna scheme generally uses multiple antennas, that is, each antenna covers a certain directio...

Claims

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Application Information

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IPC IPC(8): H01Q1/38
Inventor 任冬梅佘川飞庄馗
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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