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Tunable metamaterial filter based on mechanical adjustment

A mechanical adjustment and metamaterial technology, applied in waveguide devices, electrical components, circuits, etc., can solve the problems of high cost, complex processing technology, unfavorable practical application, etc., and achieve the effect of reducing processing cost and simplifying processing technology

Active Publication Date: 2018-06-05
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its processing technology is complex, and it often requires three-dimensional multi-layer processing or three-dimensional processing by sacrificial layer technology, so the cost of mechanically adjustable tunable metamaterials is often high, which is not conducive to its practical application.

Method used

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  • Tunable metamaterial filter based on mechanical adjustment
  • Tunable metamaterial filter based on mechanical adjustment
  • Tunable metamaterial filter based on mechanical adjustment

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Embodiment Construction

[0021] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, taking a tunable metamaterial filter based on mechanical adjustment working in the terahertz band as an example.

[0022] figure 1 It is a structural schematic diagram of the filter of the present invention. Such as figure 1 As shown, the filter is composed of a first plane metamaterial (1), a second plane metamaterial (2), a horizontal movement mechanism (3) and a base (4). The first plane metamaterial (1) is vertically fixed on the base (4). The second planar metamaterial (2) is vertically fixed on the horizontal moving mechanism (3), and the horizontal moving mechanism (3) is fixed on the base (4). The first planar metamaterial (1) and the second planar metamaterial (2) are kept parallel with a small distance. The present invention does not specify the specific implementation form of the horizontal movement mechanism (3), and in pr...

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Abstract

The invention discloses a tunable metamaterial filter based on mechanical adjustment. The filter is composed of two planar metamaterials parallel to each other. The two planar metamaterials have the same resonant structure distribution cycle and arrangement direction. When relative positions of the metamaterials are changed by using a mechanical structure, a coupling state between resonant structures is changed, so that the resonant frequency is changed. The filter disclosed by the invention can be processed and assembled by using the conventional microstructure processing technology, and support of an MEMS (Micro-electromechanical Systems) technology is not needed, so the processing cost is greatly reduced. Meanwhile, the filter disclosed by the invention is wide in tunable range, and quality factor variation in the tuning process is small. The tunable metamaterial filter disclosed by the invention is applicable to microwave, Terahertz wave and light wave bands.

Description

technical field [0001] The invention relates to a frequency-tunable metamaterial filter based on mechanical adjustment, and belongs to the technical field of tunable metamaterials. Background technique [0002] Metamaterials are functional devices composed of periodically arranged subwavelength microstructures. Its electromagnetic properties are only related to its microstructure, so the corresponding electromagnetic properties can be obtained through different structural designs. At the same time, because of its small size and only a thin layer, it has great application prospects. One example of this is the use of metamaterials as filters. At present, a variety of metamaterial-based filters have been applied to imaging, sensing and other fields. However, compared to filters with only fixed frequencies, filters with adjustable frequencies are obviously more suitable for complex application requirements. Commonly used metamaterial resonant frequency adjustment methods mai...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/213
CPCH01P1/20H01P1/213
Inventor 刘建军洪治
Owner CHINA JILIANG UNIV
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