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Metamaterial antenna

A metamaterial and antenna technology, applied in the field of metamaterials, can solve the problems of small half-power bandwidth and small half-power bandwidth of the antenna, and achieve the effect of increasing the propagation distance, reducing the half-power bandwidth, and increasing the front-to-back ratio

Active Publication Date: 2012-05-30
KUANG CHI CUTTING EDGE TECH LTD
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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 metamaterial thin film layer at the front end of the antenna, so that the signal sent by the antenna has a Smaller half-power bandwidth to achieve long-distance signal transmission and reception

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Embodiment Construction

[0028] 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.

[0029] 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 which comprises a vibrator, a metamaterial film layer and a reflector, wherein the vibrator is used for generating electromagnetic waves; the metamaterial film layer is used for converging the electromagnetic waves generated by the vibrator and outwards radiating the electromagnetic waves and is also used for converting spherical electromagnetic waves generated by the vibrator into planar electromagnetic waves, and comprises a plurality of metamaterial sheet layers; and the reflector is used for reflecting partial electromagnetic waves generatedby the vibrator to the metamaterial film layer, is a cover-free cavity and forms a closed cavity together with the metamaterial film layer, and the vibrator is arranged in the reflector. Through changing the refractive index distribution condition inside the metamaterial film layer, the invention ensures that a half-power bandwidth of an antenna far field is reduced, further propagating distance of the antenna is increased, and front-to-back ratio of the antenna is increased.

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. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/02H01Q19/06H01Q19/10
Inventor 刘若鹏季春霖岳玉涛李云龙
Owner KUANG CHI CUTTING EDGE TECH LTD
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