Cassegrain metamaterial antenna

A metamaterial and antenna technology, applied in antennas, electrical components, etc., can solve problems such as adverse effects of antenna radiation, and achieve the effect of reducing loss and improving efficiency

Active Publication Date: 2012-11-28
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

[0011] The technical problem to be solved by the present invention is to provide a Cassegrain metamaterial antenna that eliminates adverse effects,

Method used

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  • Cassegrain metamaterial antenna
  • Cassegrain metamaterial antenna
  • Cassegrain metamaterial antenna

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Embodiment Construction

[0030] 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.

[0031] "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":

[0032] (1) "Metamaterials" are usually composite materials with novel artificial structures;

[0033] (2) "Metamaterials" have extraordinary physical properties (often not available in natural materials);

[0034] (3) The properties of "metamaterials" are often not mainly determin...

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Abstract

The invention discloses a cassegrain metamaterial antenna, which comprises a rotary paraboloid, a feed source, a metamaterial and a hyperboloid, wherein the feed source is used for emitting electromagnetic waves; the metamaterial is arranged at a real focus of the hyperboloid, consists of a base material and a plurality of artificial micro structures on the base material and is used for scattering the electromagnetic waves to the hyperboloid; a virtual focus of the hyperboloid is overlapped with the focus of the rotary paraboloid and is used for reflecting the scattered electromagnetic waves to the rotary paraboloid; and the rotary paraboloid is used for sending the reflected electromagnetic waves to space in a manner of planar waves. According to the cassegrain metamaterial antenna, the electromagnetic waves emitted by the feed source pass through the metamaterial and are scattered to the hyperboloid at a certain angle and then reflected to the rotary paraboloid of the antenna through the hyperboloid, so that the influence of the feed source and a bracket thereof on the radiation of the antenna are greatly eliminated.

Description

technical field [0001] The invention relates to the field of antennas, and more specifically, to a Cassegrain metamaterial antenna. Background technique [0002] As we all know, the Cassegrain antenna consists of three parts, namely the main reflector, sub-reflector and radiation source. The main reflector is a rotating paraboloid, and the secondary reflector is a hyperboloid. Structurally, one focus of the hyperboloid coincides with the focus of the paraboloid, and the radiation source is located at the other focus of the hyperboloid. The Cassegrain antenna is a reflection of the electromagnetic wave emitted by the radiation source by the secondary reflector, reflecting the electromagnetic wave to the main reflector, and then obtaining a plane wave beam in the corresponding direction after being reflected by the main reflector to achieve directional emission. [0003] When the radiator is located at the real focus of the rotating hyperboloid, the emitted rays are reflecte...

Claims

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Application Information

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IPC IPC(8): H01Q19/06H01Q15/02H01Q19/19
Inventor 刘若鹏季春霖岳玉涛张凌飞
Owner KUANG CHI INST OF ADVANCED TECH
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