Metamaterial antenna

A metamaterial and antenna technology, applied in the field of metamaterials, can solve the problems of small half-power bandwidth of the antenna, reduce the half-power bandwidth of the antenna, etc., achieve the effect of reducing the half-power bandwidth, improving the front-to-back ratio, and promoting longer-distance transmission

Active Publication Date: 2015-02-04
KUANG CHI INST OF ADVANCED TECH +1
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Problems solved by technology

[0004] The purpose 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 is provided with a second metamaterial film layer in the reflector and a first metamaterial film on the reflector opening. layer, which greatly reduces the half-power bandwidth of the antenna, improves the front-to-back ratio of the antenna, makes the antenna directivity better, and promotes the longer-distance transmission of the antenna

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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 a vibrator, a first metamaterial thin-film layer, a second metamaterial thin-film layer and a reflector, wherein the vibrator is used for radiating electromagnetic waves; the first metamaterial thin-film layer is used for refracting, converging and externally propagating the electromagnetic waves radiated by the vibrator; the first metamaterial thin-film layer is connected with the reflector and forms a closed cavity with the reflector; the second metamaterial thin-film layer is arranged on the bottom layer in the reflector; and the vibrator is arranged on the second metamaterial thin-film layer and is connected with a peripheral signal transmitter by a feeder. The metamaterial antenna has the following beneficial effects: by arranging the second metamaterial thin-film layer in the reflector and arranging the first metamaterial thin-film layer at the opening of the reflector, the half-power bandwidth of the antenna is greatly reduced and the front-to-back ratio of the antenna is increased so that the directionality of the antenna is better and farther transmission 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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