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Metamaterial antenna

A metamaterial and antenna technology, applied in the field of metamaterials, can solve the problems of long signal propagation distance and small antenna half-power bandwidth, and achieve the effects of long signal propagation distance, reduced half-power bandwidth, and improved front-to-back ratio

Active Publication Date: 2015-02-04
KUANG CHI INST OF ADVANCED TECH +1
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  • Abstract
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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 greatly reduces the half-power bandwidth of the antenna, improves the gain of the antenna, and improves the front and rear of the antenna. Ratio, so that the signal transmitted by the antenna can travel farther

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Embodiment Construction

[0032] 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.

[0033] 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 metamaterial thin-film layer, a reflector, a first conductor and a second conductor, wherein the vibrator is used for generating electromagnetic waves; the metamaterial thin-film layer is used for externally radiating the electromagnetic waves generated by the vibrator after converging the electromagnetic waves and is also used for transforming the spherical electromagnetic waves generated by the vibrator to plane electromagnetic waves; the reflector is used for reflecting part of the electromagnetic waves generated by the vibrator into the metamaterial thin-film layer; the first and second conductors are used for reflecting the electromagnetic waves generated by the vibrator and are arranged in the reflector; and the reflector is connected with the metamaterial thin-film layer to form a closed cavity. The metamaterial antenna has the following beneficial effects: by arranging the first and second conductors in the reflector of the antenna and arranging the metamaterial thin-film layer at the front end of the antenna, the half-power bandwidth of the antenna is greatly reduced, the antenna gain is increased and the front-to-back ratio of the antenna is simultaneously improved so that the propagation distances of the signals transmitted by the antenna are farther.

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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