Metamaterial capable of realizing polarization conversion

A polarization conversion and metamaterial technology, applied in electrical components, antennas, etc., can solve the problems of complex implementation of polarization conversion technology, difficult to eliminate system distortion, and inaccurate results, achieving low manufacturing costs, diverse functions, and convenience. Control and Design Effects

Inactive Publication Date: 2012-11-07
KUANG CHI INST OF ADVANCED TECH +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The implementation of the existing polarization conversion technology is very complicated and requires a series of devices, so the matching of each device in different frequency bands must be considered during the implementation process, and the distortion of the entire system is difficult to eliminate, and the obtained results are not very accurate.

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  • Metamaterial capable of realizing polarization conversion
  • Metamaterial capable of realizing polarization conversion
  • Metamaterial capable of realizing polarization conversion

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Embodiment Construction

[0044] "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.

[0045] Three important features of "metamaterials":

[0046] (1) "Metamaterials" are usually composite materials with novel artificial structures;

[0047] (2) "Metamaterials" have extraordinary physical properties (often not available in natural materials);

[0048] (3) The properties of "metamaterials" often do not mainly determine the intrinsic properties of the constituent materials,

[0049] It depends on the artificial structure in it.

[0050] The present invention utilizes metamaterials to construct a polarization converter. details as follows:

[005...

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Abstract

The invention relates to a metamaterial capable of realizing polarization conversion. The metamaterial comprises a base material and a plurality of artificial microstructures arranged on the base material. An electric field vector of plane electromagnetic waves propagated in the artificial microstructure can be affected by the artificial microstructures, so that phase difference delta phi generated by two orthogonal components of the electric field vector meets the equation of delta phi=(k1-k2)Xd when the plane electromagnetic waves leave the metamaterial, wherein omega is the frequency of the electromagnetic waves, epsilon is the dielectric constant of the metamaterial, d is the thickness of the metamaterial, and mu1 and mu2 are magnetic permeability of the metamaterial. By the aid of the metamaterial capable of realizing polarization conversion, polarization modes of the plane electromagnetic waves can be easily converted.

Description

technical field [0001] The invention relates to a device for polarization conversion of plane electromagnetic waves, in particular to a metamaterial for realizing polarization conversion. Background technique [0002] The polarization state of electromagnetic waves and light is widely used in liquid crystal displays, radio frequency antennas and various radiation devices, satellite antennas and optical devices. Traditional polarization conversion devices usually limit the transmission of one polarized wave and reflect the unwanted polarized wave; or divide the wave into two beams with different polarization states, so one polarized wave can only carry less than Half the energy, and the process requirements and costs are high. In addition, the conversion between circularly polarized waves and linearly polarized waves can be achieved by using waveguides with tapered cross-sections. Used to realize polarization conversion, the former has a large energy loss, while the latter ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/24
Inventor 刘若鹏廖臻季春霖岳玉涛
Owner KUANG CHI INST OF ADVANCED TECH
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