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Ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization converter

A polarization conversion and ultra-broadband technology, applied in antennas, electrical components, etc., can solve the problems of not being able to realize broadband, and achieve the effect of strong innovation, good technical foresight, and rich types and methods

Inactive Publication Date: 2017-05-10
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Technical problem: The technical problem to be solved by the present invention is to realize the polarization conversion of linearly polarized waves in the broadband range through multiple plasmon resonances for the defect that the sub-wavelength structural units involved in the background technology cannot realize broadband

Method used

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  • Ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization converter
  • Ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization converter
  • Ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization converter

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 , 2 As shown, the unilateral dimension of the V-shaped resonator at both ends is b=1.5 mm, and the angle α=85° with the cutting wire resonator whose length is l=2.6 mm, and the unilateral length of the V-shaped metal wire structure on both sides is c= 0.45 mm, the included angle β=90°, and the distance h=0.6 mm from the cutting line resonator. The side length of the overall unit is a = 3 mm, the dielectric layer is F4B, and the dielectric constant ε r =2.65, the loss tangent is 0.001. The line width of the metal structure of the artificial surface electromagnetic structure is w=0.2 mm, and the thickness of all metals is 0.035 mm.

[0032] as figure 2 The incident electromagnetic wave shown Take the vertical polarization as an example, let the v-axis and the y-axis form 45°, and the u-axis is perpendicular to the v-axis. The incident vertically polarized electromagnetic wave can be decomposed into and Since electric resonance and magnetic res...

Embodiment 2

[0035] Such as image 3 As shown, the unit structure is basically similar to that of Embodiment 1, except that the positions of the v-axis and the u-axis are exchanged.

Embodiment 3

[0037] Such as Figure 4 As shown, the ultra-thin and ultra-broadband line-polarized electromagnetic wave polarization conversion unit structures are arranged periodically along the length and width directions to form an ultra-thin and ultra-broadband line-polarized electromagnetic wave polarization conversion device.

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Abstract

The invention provides an ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization conversion unit structure, which is formed by a three-layer structure and comprises an artificial surface electromagnetic structure on an uppermost layer, a medium on an intermediate layer and a metal plate on a bottom layer. Through designing the artificial surface electromagnetic structure, a plurality of plasma resonant cavities are achieved and an incident electromagnetic wave can be efficiently polarized and converted into a cross-polarized reflected wave. The ultra-thin ultra-wideband linearly polarized electromagnetic wave polarization conversion unit has a series of advantages of a periodic structure property, a compact size, a broadband, high conversion efficiency, simplicity in structure, a relatively small thickness and wide application, and is easily combined with a traditional device.

Description

technical field [0001] The invention relates to a polarization converter structure, in particular to an ultra-thin broadband line-polarized electromagnetic wave polarization converter structure. Background technique [0002] Polarization is an important feature of electromagnetic waves, and when propagated by electromagnetic waves, the electric field vector to describe the oscillatory behavior. When the electromagnetic wave along the wave vector When the direction of propagating forward, as time changes, the electric field vector When the trajectory traveled by the end of is a straight line, a circle, or an ellipse, the corresponding polarization states are linear polarization, circular polarization, and elliptical polarization. In actual work, people often change the polarization state of electromagnetic waves according to needs. Therefore, the polarization of electromagnetic waves has many important applications in fields such as antennas, communication systems, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/24
CPCH01Q15/248
Inventor 陈新蕾孙恒一顾长青李茁刘亮亮许秉正周子成
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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