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
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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 structured metal basic unit consists of two metal discs and two metal squares with round holes in the center, which are staggered to form a 2-row and 2-column unit. The diagonal positions are two completely identical structures, which are metal discs and a metal square with a round hole in the center, such as figure 1 shown. The periodic arrangement of structured metal basic units constitutes a structured metal layer covering the upper surface and the lower surface of the dielectric layer. figure 1 , fig...
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