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Scattering type metamaterial directional antenna

A directional antenna and metamaterial technology, applied in antennas, electrical components and other directions, can solve the problem of difficult transformation of antenna radiation effects

Active Publication Date: 2014-11-05
KUANG CHI INST OF ADVANCED TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a scattering metamaterial orientation that is easy to modify, simple, easy to implement, and low in cost in view of the defect that the feed source and its supporting rods in the prior art have a relatively difficult effect on antenna radiation. antenna

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  • Scattering type metamaterial directional antenna
  • Scattering type metamaterial directional antenna
  • Scattering type metamaterial directional antenna

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Embodiment Construction

[0023] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0024] "Metamaterial" refers to some artificial composite structures or composite materials with extraordinary physical properties that natural materials do not have. Through the orderly design of the structure on the key physical scale of the material, the limitation of some apparent natural laws can be broken through, so as to obtain the supernormal material function beyond the ordinary nature inherent in nature. Three important features of "metamaterials":

[0025] (1) "Metamaterials" are usually composite materials with novel artificial structures;

[0026] (2) "Metamaterials" have extraordinary physical properties (often not available in natural materials);

[0027] (3) The properties of "metamaterials" are often not mainly determin...

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Abstract

The invention discloses a scattering type metamaterial directional antenna which comprises a main reflector, a feed source, a metamaterial and a reflection board, wherein the main reflector, the feed source, the metamaterial and the reflection board are arranged relatively in sequence; the feed source is used for emitting electromagnetic waves; the metamaterial is composed of a substrate and a plurality of manmade microstructures on the substrate, and is used for scattering the electromagnetic wave to the reflection board; the reflection board is used for further reflecting the scattered electromagnetic wave back to the main reflector; the main reflector is used for directionally transmitting the reflected electromagnetic wave to a space in a planar wave manner. According to the metamaterial directional antenna, the electromagnetic wave emitted by the feed source passes through the metamaterial and the reflection board, and is scattered so as to bypass the feed source to be projected to a paraboloid main reflector of the antenna, so that the radiation influence of the feed source and a bracket of the feed source on the antenna can be eliminated to a large extent.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a scattering metamaterial directional antenna. Background technique [0002] At present, the feedforward main reflector antenna in the radar is a directional antenna whose main reflector is a paraboloid, and the feed source is located near its focus, which can convert the spherical wave radiated by the feed source into a plane wave. [0003] Its working principle is similar to that of an optical mirror, utilizing the focusing properties of a parabolic primary reflector. The spherical wave emitted by the feed source is transformed into a plane wave after being reflected by the parabola, forming a narrow beam with the strongest radiation along the parabolic axis. It is a parallel beam that enables the antenna to transmit in a directional manner, which is difficult for other shaped antennas. [0004] In the prior art, since the feed source and its supporting rods are blocked in front of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q19/00H01Q19/19H01Q15/00
Inventor 刘若鹏石小红徐冠雄杨松涛
Owner KUANG CHI INST OF ADVANCED TECH
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