A terahertz metamaterial filter

A filter and metamaterial technology, which is applied in the field of terahertz technology and metamaterial devices, can solve problems such as low square coefficient, poor flat-top characteristics, and difficulty in meeting practical application requirements, and achieve high square coefficient and low material cost.
CN111769345BActive Publication Date: 2022-06-28HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2022-06-28

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Abstract

The invention discloses a terahertz metamaterial filter comprising: n×n identical units; each unit is composed of multi-layer polymer materials polymethacrylimide and polyimide and multi-layer metal layers, And starting from the incident direction of the terahertz wave, they are aligned and stacked repeatedly in the order of metal-polyimide-polymethacrylimide. The terahertz wave is incident on the filter to generate electromagnetic resonance, the terahertz wave at the resonant frequency is reflected and absorbed to form a stop band, and the waves of other frequencies are not hindered. The filter of the present invention mainly solves the problems of small square coefficient and narrow bandwidth in the existing filters of the same type, and has the advantages of flat top, polarization insensitivity and low cost.
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Description

technical field

[0001] The invention relates to the field of terahertz technology and metamaterial devices, in particular to a metamaterial filter used in the terahertz frequency band. Background technique

[0002] Terahertz technology has great potential in wireless communications, space science, and sensing. To realize practical terahertz systems, there is a strong demand for terahertz functional devices such as filters, phase shifters, absorbers, and modulators that can directly control terahertz waves.

[0003] Metamaterial filters are designed to generate electrical resonance and magnetic resonance with the incident electromagnetic wave by reasonably designing the geometric structure and geometric parameters of the metamaterial. At the resonance frequency, most of the incident waves are reflected and absorbed to form a stop band. At the non-resonant frequency, the incident wave is transmitted through the metamaterial to form a passband, thereby realizing the regulation...

Claims

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