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Metamaterial antenna

Active Publication Date: 2014-11-26
KUANG CHI INST OF ADVANCED TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to solve the problem that the half-power bandwidth of the antenna in the prior art is small, and to provide a metamaterial antenna, which greatly reduces the The half-power bandwidth of the antenna is improved, the front-to-back ratio of the antenna is improved, the directivity of the antenna is better, and the longer-distance transmission of the antenna is promoted

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0030] Metamaterial is a new type of material with artificial microstructures as the basic unit, which is spatially arranged in a specific way and has special electromagnetic response, including periodically arranged artificial microstructures and substrates for artificial microstructures to attach to. The artificial microstructure is a planar structure or a three-dimensional structure that is composed of at least one metal wire and responds to electromagnetic waves. Multiple artificial microstructures are arranged in arrays on the substrate. The portion of each artificial microstructure and the substrate it is attached to is A metamaterial unit. The substrate can be any material different from the artificial microstructure. The superposition of these two materials produ...

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Abstract

The invention relates to a metamaterial antenna. The antenna comprises an oscillator for generating electromagnetic waves, and a metamaterial film layer for converging the electromagnetic waves generated by the oscillator and then radiating the electromagnetic waves outwards and also for converting spherical electromagnetic waves generated by the oscillator into plane electromagnetic waves; the antenna also comprises a reflecting body for reflecting part of the electromagnetic waves generated by the oscillator into the metamaterial film layer, and two conductors for reflecting part of the electromagnetic waves at the connection part between the reflecting body and the metamaterial film layer, wherein the oscillator is located in the reflecting body; and the reflecting body, the two conductors and the metamaterial film layer are connected successively, and collectively constitute a closed cavity. The metamaterial antenna provided by the invention has the beneficial effects that by arranging the vertical conductors at an opening of the reflecting body and arranging the metamaterial film layer on the conductors, the half-power bandwidth of the antenna is greatly reduced, the front-to-back ratio of the antenna is improved, so that the antenna directivity is better, and further-distance emission of the antenna is promoted.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a metamaterial antenna. Background technique [0002] Half power angle, also known as 3dB beam width, half power beam width, half power bandwidth. In the power pattern diagram, in a certain plane containing the maximum radiation direction of the main lobe, the angle between two points where the relative maximum radiation direction power flux density drops to half (or less than the maximum value 3dB) is called half power beam width. In the field strength pattern, in a plane containing the maximum radiation direction of the main lobe, the included angle at which the field strength of the relative maximum radiation direction is reduced to 0.707 times is also called the half-power beam width. The horizontal half-power beamwidth refers to the half-power beamwidth of the horizontal pattern, and the vertical half-power beamwidth refers to the half-power beamwidth of the vertical pattern. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00H01Q15/23H01Q19/06H01Q19/10
Inventor 刘若鹏季春霖岳玉涛李云龙
Owner KUANG CHI INST OF ADVANCED TECH
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