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Reflection-type ultra-wideband terahertz polarization reconfigurable circular polarizer

A circular polarizer and ultra-broadband technology, which is applied in the field of reflective ultra-broadband terahertz polarized reconfigurable circular polarizers, can solve problems such as unfavorable integration, single polarization mode, and thick polarizer, and achieve Good linear-circular polarization conversion performance, broad application prospects, strong practical effect

Pending Publication Date: 2017-06-20
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional polarizer has a thick thickness and complex structure, which is not conducive to integration, low efficiency, single polarization mode, and narrow bandwidth

Method used

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  • Reflection-type ultra-wideband terahertz polarization reconfigurable circular polarizer
  • Reflection-type ultra-wideband terahertz polarization reconfigurable circular polarizer
  • Reflection-type ultra-wideband terahertz polarization reconfigurable circular polarizer

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Embodiment

[0023] Such as figure 1 , figure 2 As shown, it consists of M×N unit structures periodically arranged in the same horizontal plane; the unit structure includes metal floor layers, intermediate dielectric layers and double-opening resonant square ring structure layers stacked in sequence; the double-opening The resonant square ring structure layer 3 is an anisotropic double-opened square ring structure composed of two centrally symmetrical L-shaped strips 4 .

[0024] The metal floor layer 1 has a thickness of 0.2um and an electrical conductivity of 5.8×10 7 S / m copper layer.

[0025] The intermediate dielectric layer 2 is a polyimide layer with a dielectric constant of 3 and a thickness of 47um.

[0026] The double opening resonant square ring structure layer is a copper layer with a thickness of 0.2um, the distance from the ring arm to the unit structure boundary is 10um, the arm length is 44um, and the arm width is 5um.

[0027] The periodic arrangement of the unit stru...

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Abstract

The invention discloses a reflection-type ultra-wideband terahertz polarization reconfigurable circular polarizer, which is formed by M*N unit structures arranged periodically in the same horizontal plane. Each unit structure comprises a metal floor layer, a middle dielectric layer and a double-open resonant square ring structure layer, which are stacked up in sequence. The double-open resonant square ring structure layer is an anisotropic double-open square ring structure formed by two centrosymmetric L-shaped metal bars. The polarizer is high in practicality, can convert a linear polarized wave into a circular polarized wave efficiently within a terahertz ultra-wideband range, is simple in structure and easy to process, still has good linear-circular polarization conversion performance within a wide incidence angle range, and has a polarization reconfigurable characteristic; and besides, by adjusting structure parameters, the polarizer can be applied to other frequency bands and has a wide application prospect in the aspects of antenna design and stealth technology and the like.

Description

technical field [0001] The invention relates to the technical field of electromagnetic wave polarizers, in particular to a reflective ultra-broadband terahertz polarization reconfigurable circular polarizer. Background technique [0002] Circularly polarized waves have significant advantages in interference and anti-interference. Circularly polarized waves are widely used in electronic reconnaissance, satellite communications and other fields, and the design of circular polarizers has always been a research hotspot. At present, the research on polarizers is developing in the direction of terahertz band, broadband, multi-polarization conversion, miniaturization, and high-efficiency conversion. The traditional polarizer has a thick thickness and complex structure, which is not conducive to integration, low efficiency, single polarization mode, and narrow bandwidth. In recent years, metamaterials have attracted widespread attention of scholars due to their singular electromagn...

Claims

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Application Information

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IPC IPC(8): H01Q15/24
CPCH01Q15/244
Inventor 姜彦南王蕾王娇曹卫平高喜于新华
Owner GUILIN UNIV OF ELECTRONIC TECH
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