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Metamaterial and metamaterial antenna

A metamaterial and antenna technology, applied in the electromagnetic field, can solve problems such as poor lens performance

Active Publication Date: 2012-12-05
KUANG CHI INST OF ADVANCED TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a high-performance metamaterial and metamaterial antenna for the defects of the prior art that the above-mentioned refraction, diffraction and reflection are relatively large and the performance of the lens is poor.

Method used

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  • Metamaterial and metamaterial antenna

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Embodiment Construction

[0039] figure 2 It is a schematic diagram of a metamaterial condensing electromagnetic waves according to an embodiment of the present invention, and the metamaterial 10 is relatively arranged in the electromagnetic wave propagation direction of the radiation source.

[0040] As common knowledge, we know that the refractive index of electromagnetic waves is related to In direct proportion, when a beam of electromagnetic wave propagates from one medium to another medium, the electromagnetic wave will be refracted. When the refractive index distribution inside the material is non-uniform, the electromagnetic wave will be deflected to a position with a relatively large refractive index. Through By designing the electromagnetic parameters of each point in the metamaterial, the refractive index distribution of the metamaterial can be adjusted, thereby achieving the purpose of changing the propagation path of electromagnetic waves. According to the above principles, the electroma...

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Abstract

The invention relates to a metamaterial and a metamaterial antenna. The metamaterial is relatively arranged in the electromagnetic wave propagation direction of a radiation source; an angle between a link line of the radiation source and one point on a first surface of the metamaterial and a straight line which is vertical to the metamaterial is set to be theta, the angle theta exclusively corresponds to one curve surface inside the metamaterial, a refractive index on each position of the curve surface which exclusively corresponds to the angle theta is identical, and a generatrix of the curve surface is an elliptic arc; the refractive index of the metamaterial is gradually reduced along the increase of the angle theta; and electromagnetic waves are transmitted in parallel on the top surface of each ring body after passing through the metamaterial. The hopping of the refractive indexes of the metamateiral is designed into a curve surface shape, so that the refraction, diffraction and reflection reaction on each hopping position can be greatly reduced, the interference problem can be alleviated, and the metamaterial and the metamaterial antenna have more excellent performances.

Description

technical field [0001] The invention relates to the field of electromagnetics, and more specifically, to a metamaterial and a metamaterial antenna. Background technique [0002] In conventional optical devices, a lens can make the spherical wave radiated by a point light source located at the focal point of the lens become a plane wave after being refracted by the lens. At present, the convergence of the lens is realized by the refraction of the spherical shape of the lens, such as figure 1 As shown, the spherical wave emitted by the radiator 30 is converged by the spherical lens 40 and then emitted as a plane wave. In the process of implementing the present invention, the inventor found that the lens antenna has at least the following technical problems: the spherical lens 40 is bulky and heavy, which is not conducive to the use of miniaturization; Realize the directional propagation of the antenna; the electromagnetic wave reflection interference and loss are relatively ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/02H01Q19/06
Inventor 刘若鹏季春霖岳玉涛
Owner KUANG CHI INST OF ADVANCED TECH
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