Terahertz bandwidth band-pass filter based on artificial electromagnetic material

An artificial electromagnetic material and band-pass filter technology, which is applied in the field of terahertz broadband band-pass filters, can solve the problems of inconvenient processing, complex structure design, and limited application, and achieve the advantages of convenient processing, good filtering characteristics, and good filtering performance Effect

Inactive Publication Date: 2015-03-11
CHINA UNIV OF MINING & TECH
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These structural designs are relatively complicated, which brings a lot of

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  • Terahertz bandwidth band-pass filter based on artificial electromagnetic material
  • Terahertz bandwidth band-pass filter based on artificial electromagnetic material
  • Terahertz bandwidth band-pass filter based on artificial electromagnetic material

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[0027] The filter of the present invention adopts a sandwich structure composed of a first structured metal layer, a dielectric layer and a second structured metal layer. The metal disc and metal square can be made of gold or copper, and the dielectric layer is usually made of polyimide material. The first structured metal layer and the second structured metal layer are composed of identical, periodically arranged structured metal basic units, such as figure 2 shown. The structural metal basic unit is a 2-row 2-column unit composed of two metal discs and two metal squares with a circular hole in the center. The diagonal positions are two completely identical structures, which are metal discs and metal squares with round holes in the center, such as figure 1 shown. The periodic arrangement of the structured metal basic units constitutes a structured metal layer covering the upper and lower surfaces of the dielectric layer. figure 1 , figure 2 and image 3 Medium-dark are...

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Abstract

The invention discloses a terahertz bandwidth band-pass filter based on an artificial electromagnetic material. The terahertz bandwidth band-pass filter comprises a first structuralized metal layer, a medium layer and a second structuralized metal layer. The medium layer is located between the first structuralized metal layer and the second structuralized metal layer; and the first structuralized metal layer and the second structuralized metal layer are composed of structuralized metal elementary units arranged periodically. Each structuralized metal elementary unit is a dual-row dual-line unit composed of two circular metal sheets as well as two square metal sheets with circular holes at the centers. Two completely equivalent structures at the diagonal positions respectively are the circular metal sheets and the square metal sheets with circular holes at the centers. The terahertz bandwidth band-pass filter has a simple and novel structure, is simple to manufacture, convenient to process and carry and easy to integrate and has unobvious polarization and broad application prospects in the fields such as communication field and imaging technologies.

Description

technical field [0001] The invention relates to a terahertz broadband bandpass filter based on artificial electromagnetic materials, belonging to the field of new artificial electromagnetic materials. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1THz to 10THz and corresponding wavelengths in the range of 0.03mm to 3mm, which is between microwave and infrared. Terahertz waves have some unique properties, such as instantaneity, safety, high transmittance, broadband, etc. [0003] Artificial electromagnetic materials (also known as metamaterials) refer to artificial composite materials that have special conduction or radiation characteristics when electromagnetic waves propagate in them, such as photonic crystal materials, left-handed materials, etc. It is an electromagnetic material that can be artificially designed to meet specific requirements for equivalent permittivity and permeability. By changing the sh...

Claims

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Application Information

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IPC IPC(8): H01P1/20
Inventor 沈晓鹏付文悦李建东何韦刚余晴李海鹏韩奎
Owner CHINA UNIV OF MINING & TECH
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