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Horn antenna

A horn antenna and horn technology, applied in the field of communication, can solve the problems of high cost and difficult processing of the horn antenna, and achieve the effects of uniform amplitude distribution, improved utilization efficiency, and improved far-field gain

Active Publication Date: 2014-03-26
KUANG CHI INST OF ADVANCED TECH
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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 horn antenna with a simple structure in view of the defects of the existing horn antennas, which are difficult to process and high in cost.

Method used

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no. 1 example

[0042] According to the first embodiment, a simulation test is performed on a horn antenna with the following parameters:

[0043] The center frequency of the horn antenna is 18.356GHZ;

[0044] Such as image 3 As shown, the upper side SB of the right-angled trapezoidal section of the metamaterial sleeve TT is 19mm, the lower side XB is 3mm, and the height (that is, the radial thickness HD of the metamaterial sleeve) is 3.054mm.

[0045] The refractive index of the section of the metamaterial sleeve TT close to the horn aperture surface is 1.56, and the refractive index of each section gradually increases along the direction perpendicular to the horn aperture surface. The refractive index of the outermost section is 8.

[0046] Such as Picture 8 Shown is the far field diagram of the horn antenna, from Picture 8 It can be seen that the gain of the horn antenna of this embodiment is improved compared with the standard horn.

[0047] Such as Figure 4 Shown is the horn antenna of the se...

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Abstract

The invention relates to a horn antenna which comprises a horn and a metamaterial sleeve, wherein the metamaterial sleeve is arranged at the opening of the horn and comprises at least one metamaterial ring layer, and the metamaterial ring layer comprises an annular substrate and a plurality of artificial microstructures attached to the surface on the outer side of the annular substrate. The refractive index of any section of each metamaterial ring layer is gradually increased from inside to outside in a direction vertical to the aperture surface of the horn opening. According to the horn antenna, the metamaterial sleeve with the gradually-varied refractive indexes is arranged at the opening of the horn, so that the amplitude distribution of a wavefront electric field is more uniform, therefore the utilization efficiency of the aperture surface of the horn antenna opening is increased, and the far field gain of the horn antenna is increased.

Description

Technical field [0001] The present invention relates to the field of communication, and more specifically, to a horn antenna. Background technique [0002] The horn antenna, that is, the antenna with the waveguide terminal splayed into a horn shape, is usually used as a medium directional antenna, such as a standard horn, because of its simple structure and easy control of the directional pattern. The most common one is used as the feed of the reflecting surface; the horn antenna has The advantages of simple structure, low cost and high gain are widely used in engineering. However, in some special fields, due to the constraints of working environment and equipment, it is often required to further improve the gain performance. The traditional method is to add phase correction Reflective surface or lens, but these structures are curved structures, which have a lot of inconvenience in processing and installation. Summary of the invention [0003] The technical problem to be solved b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/08H01Q15/02
Inventor 刘若鹏季春霖岳玉涛郭洁刘豫青
Owner KUANG CHI INST OF ADVANCED TECH
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