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Directional Propagation Radome and Directional Antenna Systems

A radome and antenna technology, applied in the field of communication, can solve the problems of no electromagnetic wave directional radiation, single function of the radome, etc., and achieve the effects of easy manufacturing and processing, improving signal strength and antenna gain, and low cost

Active Publication Date: 2017-03-22
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a directional propagation radome and a directional antenna system capable of directional propagation of electromagnetic waves in view of the defects of the existing radome with single function and no directional radiation of electromagnetic waves.

Method used

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  • Directional Propagation Radome and Directional Antenna Systems

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Embodiment Construction

[0030] We know that electromagnetic waves will be refracted when they propagate from one homogeneous medium into another homogeneous medium, which is caused by the difference in the refractive index of the two media. As for the inhomogeneous medium, the electromagnetic wave will also be refracted inside the medium and be deflected to the position with a relatively large refractive index. while the refractive index is equal to That is, the refractive index of a medium depends on its permittivity and permeability.

[0031]Metamaterial is a kind of artificial composite material with artificial microstructure as the basic unit, which is spatially arranged in a specific way and has special electromagnetic response. A general metamaterial includes a plurality of metamaterial sheets, and each metamaterial sheet is composed of an artificial microstructure and a substrate for attaching the artificial microstructure (each artificial microstructure and its attached substrate are artifi...

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Abstract

The invention relates to a directional spreading antenna housing and a directional antenna system, wherein the directional spreading antenna is covered on an antenna. The directional spreading antenna housing comprises a metamaterial panel arranged apposite to the antenna. The metamaterial panel comprises at least one metamaterial sheet layer, a plurality of refractive index circles are formed by taking a point on each of the metamaterial sheet layers as a center, and the plurality of concentric refractive index circles form a circular refractive index distribution area; a polar coordination system is established by taking the center of the refractive index circles as a pole O and taking any one half line Oy, which takes the pole O as an endpoint, parallel to the metamaterial sheet layer as a polar axis, and the refractive index n(y) of any refractive index circle with a radius of y on the metamaterial sheet layer meets a formula that n(y)=nmax-[square root(l<2>+y<2>)-l-k*lambda] / d. Electromagnetic waves generated by an antenna feed source are enabled to form plane waves after passing through the metamaterial panel through designing the refractive index distribution, thereby being easy to manufacture and process, enabling antennas which do not have a function of directional spreading to realize directional spreading, meeting directional requirements, and improving the signal intensity and the antenna gain.

Description

technical field [0001] The present invention relates to the communication field, and more particularly, to a directional propagation radome and a directional antenna system. Background technique [0002] Metamaterials, commonly known as metamaterials, are a new type of artificial synthetic materials, which are composed of a substrate made of non-metallic materials and multiple artificial microstructures attached to the surface of the substrate or embedded in the interior of the substrate. The substrate can be virtually divided into multiple substrate units arranged in a rectangular array. Each substrate unit is attached with an artificial microstructure to form a metamaterial unit. The entire metamaterial is composed of many such metamaterial units, like Crystals are composed of countless crystal lattices arranged in a certain way. The artificial microstructures on each metamaterial unit can be the same or not. The artificial microstructure is a planar or three-dimensional...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/42H01Q15/02H01Q19/06
Inventor 刘若鹏赵治亚方小伟王凡张岭
Owner KUANG CHI INST OF ADVANCED TECH
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