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Dynamically tunable broadband polarization converter

A polarization converter and dynamic technology, applied in the direction of instruments, optics, nonlinear optics, etc., can solve the problems of unfavorable device miniaturization and large volume, and achieve the effects of light weight, easy integration, and simple operation

Active Publication Date: 2016-07-13
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Usually, the broadening of the frequency band is obtained by stacking multi-layer structures, but the volume of such structures is often relatively large, which is not conducive to the miniaturization of devices

Method used

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  • Dynamically tunable broadband polarization converter
  • Dynamically tunable broadband polarization converter
  • Dynamically tunable broadband polarization converter

Examples

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Embodiment 1

[0030] This embodiment consists of figure 1 The shown square diagonal open ring 2 and the substrate 1 are composed of a single-layer square diagonal open ring periodically arranged on the surface of the substrate, the thickness of the substrate is 1.6 mm, the material is PCB, and its dielectric constant ε=4.05-0.05 i, The size of each novel artificial electromagnetic material unit is 15 mm × 15 mm. Such as figure 2as shown, figure 1 The structure shown is a square diagonal split ring on the surface of the substrate, and is periodically extended along the X and Y directions to form an array of square diagonal split rings, each square diagonal split ring is formed by a square split ring The structure is composed of an inclined metal wire structure, the material of the metal wire is copper, and the thickness of the metal layer is t m =0.017mm, the basic information of other geometric dimensions a=15mm, l 1 = 13mm, l 2 =1mm, d=10.5mm, the inclination angle of the diagonal is...

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Abstract

The invention belongs to the field of electromagnetic wave and novel artificial electromagnetic materials and particularly relates to a dynamically tunable broadband polarization converter, comprising a dielectric layer and a novel artificial electromagnetic material layer. The novel artificial electromagnetic material layer is located on the surface of the dielectric layer, wherein novel artificial electromagnetic material is square diagonal split rings arranged periodically, and the novel artificial electromagnetic material is of sub-wavelength structure; dynamical tunability is based on the principle of coherent control and is finished through two coherent waves, namely a signal wave and a control wave, the two waves have the same amplitude and wavelength and propagate face to face in a direction perpendicular to the novel artificial electromagnetic material, and a phase difference between the signal wave and the control wave is changed. The converter has the advantages of portability, light weight, ease of integration and the like and is of single layer, small thickness, light weight and conformal proneness when compared with a traditional polarization conversion material.

Description

technical field [0001] The invention belongs to the field of electromagnetic waves and novel artificial electromagnetic materials, and in particular relates to a dynamically tunable broadband polarization converter. Background technique [0002] The emergence of new artificial electromagnetic materials has enriched the research content in the electromagnetic field, and also provided opportunities for the realization of various new microwave devices and micro-nano devices. New artificial electromagnetic materials are artificially designed composite media using conventional materials in nature. The scale of its structural units is on the sub-wavelength level, which can realize electromagnetic properties that natural materials do not have, such as negative refraction, perfect lens, and invisibility cloak. New artificial electromagnetic materials have greatly enriched the research content in the electromagnetic field and realized a variety of functional devices, such as polarize...

Claims

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Application Information

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IPC IPC(8): G02F1/01G02B1/00
CPCG02B1/002G02F1/0126G02F1/0136G02F2202/30G02F2202/36G02F2203/10
Inventor 朱正刘红吕婷婷史金辉李玉祥关春颖
Owner HARBIN ENG UNIV
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