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Linearly polarized broadband backfire helical antenna

A helical antenna, broadband technology, applied in the direction of antenna, radiating element structure, electrical components, etc., can solve the problems of unseen linearly polarized broadband back-firing helical antenna, etc., to achieve high gain, increase gain, and expand the scope of application Effect

Inactive Publication Date: 2011-05-11
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are no literature reports on linearly polarized broadband backfiring helical antennas at home and abroad

Method used

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  • Linearly polarized broadband backfire helical antenna
  • Linearly polarized broadband backfire helical antenna
  • Linearly polarized broadband backfire helical antenna

Examples

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] The linearly polarized broadband back-firing helical antenna of the present invention is composed of a primary radiator 1 , a feeding component 2 and a reflective cavity component 3 .

[0023] like figure 1 As shown, the linearly polarized broadband back-firing helical antenna of the present invention is composed of a primary radiator 1 , a feeding component 2 and a reflective cavity component 3 .

[0024] figure 2 It is a structural diagram of the primary radiator, wherein the first metal spiral arm 11 , the second metal spiral arm 12 , the dielectric support structure 13 , and the metal plate 14 . The first metal helical arm 11 and the second metal helical arm double-arm 12 start winding at a symmetrical position on the dielectric support structure 13 , the first metal helical arm 11 is left-handed, and the second metal helical arm 12 is right-handed. Of c...

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PUM

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Abstract

The invention discloses a linearly polarized broadband backfire helical antenna which comprises a primary radiator (1), a feed assembly (2) and a reflection cavity assembly (3), wherein the primary radiator (1) is arranged at a central position of the reflection cavity assembly and formed by symmetrically winding a first metal helical arm (11) and a second metal helical arm (12) on a medium supporting structure (13); the feed assembly (2) is in a coaxial structure and is formed by sequentially connecting a first binding post (21), a second binding post (22), a transform feed medium (23), an inner feed conductor (24), an outer feed conductor (25) and an electric connector (26); and the reflection cavity assembly (3) comprises a forming reflection cavity (31) and a side ring (32). In the invention, a form of bifilar helical arm reverse winding is adopted, thus the broadband characteristic of backfire helix is reserved, meanwhile, a linearly polarized working mode is realized, and thereby the application range of the backfire helical antenna is widened.

Description

technical field [0001] The invention belongs to the antenna technology in the field of wireless communication, and particularly relates to the design of a wide-band, high-gain, linearly polarized back-firing helical antenna. Background technique [0002] The antenna used to complete the function of ground data reception and forwarding on the geostationary orbit satellite works in the LS frequency band and requires a global coverage beam, that is, it has high gain within the range of ±8 degrees of the antenna axis, and must use the existing line Polarized ground station system requires a linearly polarized antenna with wide frequency band and high gain. [0003] As a low-frequency high-gain antenna, the back-firing antenna has the characteristics of simple production, good machinability, low cost, and light weight. This type of antenna is generally composed of a primary radiator and a cylindrical reflector cavity. The cylindrical reflector The cavity converts the electromagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/12H01Q1/36
Inventor 朱培芸凌闽河
Owner XIAN INSTITUE OF SPACE RADIO TECH
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