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Metamaterial microwave antenna

A microwave antenna and metamaterial technology, applied in antennas, waveguide horns, electrical components, etc., can solve the problems of difficult processing and high cost of microwave antennas, and achieve the effects of good far-field radiation field response, low cost, and compact structure

Active Publication Date: 2014-03-26
KUANG CHI INST OF ADVANCED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a metamaterial microwave antenna with simple processing and low manufacturing cost in view of the defects of difficult processing and high cost of existing microwave antennas

Method used

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Embodiment Construction

[0025] Such as figure 1 As shown, the metamaterial microwave antenna according to the present invention includes a feed source 10 , a first-level sub-reflector 20 , a second-level sub-reflector 30 and a metamaterial panel 40 . The metamaterial panel 40 is provided with a circular first center hole at its center, and the second secondary reflective surface 30 is provided with a second center hole at its center, and the metamaterial panel 40 includes a core layer 401 And the matching layer 402 arranged on both sides of the core layer 401, the core layer 401 includes at least one core layer sheet, and the core layer sheet includes a sheet-shaped substrate and a plurality of artificial microstructures arranged on the substrate. According to the refractive index distribution, the core layer can be divided into a plurality of ring-shaped regions distributed around the first central hole and concentric with the first central hole. Among the two adjacent annular regions, the minimum ...

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Abstract

The invention relates to a metamaterial microwave antenna which comprises a metamaterial panel, a feed source, a first stage subreflector and a second stage subreflector, wherein a first center hole is formed in the center of the metamaterial panel, and a second center hole is formed in the center of the second stage subreflector; the first stage subreflector is embedded in the first center hole of the metamaterial panel, and the feed source is embedded in the second center hole of the second stage subreflector. The metamaterial microwave antenna provided by the invention uses a metamaterial for converging electromagnetic wave properties and a double-curved surface like type metamaterial and a rotating elliptical surface are used as the first stage subreflector and the second subreflector respectively, so that the antenna is enabled to have a more compact structure and have the same effect with that of a long-focus microwave antenna; the energy distribution on a diametric plane is adjusted, so that the aperture efficiency of the antenna is improved and an excellent far-field radiation field response is achieved; moreover, the processing difficulty is small and the cost is low.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to a metamaterial microwave antenna. Background technique [0002] Microwave is a band between ultrashort wave and infrared in the electromagnetic spectrum. It belongs to the band with the shortest wavelength (highest frequency) in radio, and its frequency ranges from 300MHz (wavelength 1m) to 300GHz (wavelength 0.1m). Transmitting or receiving antennas working in the meter wave, decimeter wave, centimeter wave, millimeter wave and other bands are collectively referred to as microwave antennas. Among microwave antennas, parabolic antennas, horn parabolic antennas, horn antennas and lens antennas are widely used. [0003] For example, the existing satellite TV receiving antenna is a parabolic antenna, and the parabolic antenna is responsible for reflecting satellite signals into the feed source and tuner. The feed source is a horn set at the focal point of the par...

Claims

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Application Information

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IPC IPC(8): H01Q15/02H01Q15/16H01Q15/23H01Q19/06H01Q19/18H01Q13/02
Inventor 刘若鹏季春霖岳玉涛杨青殷俊
Owner KUANG CHI INST OF ADVANCED TECH
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