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Electromagnetic wave multi-band filter with side micro-cavities and metal-medium-metal waveguide coupled

A filter and electromagnetic wave technology, which is applied to waveguide devices, circuits, electrical components, etc., can solve problems such as difficult wide application and complex structure of terahertz filters, and achieve adjustable number of stop bands, easy miniaturization and integration effect

Inactive Publication Date: 2014-03-26
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

Due to the complex structure of these terahertz filters, it is difficult to be widely used

Method used

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  • Electromagnetic wave multi-band filter with side micro-cavities and metal-medium-metal waveguide coupled
  • Electromagnetic wave multi-band filter with side micro-cavities and metal-medium-metal waveguide coupled
  • Electromagnetic wave multi-band filter with side micro-cavities and metal-medium-metal waveguide coupled

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Embodiment Construction

[0020] In order to better illustrate the purpose and advantages of the present invention, further description will be made below in conjunction with the accompanying drawings and embodiments.

[0021] combine figure 1 Note that the terahertz wave source is incident from left to right, the metal material is gold with high conductivity, and the waveguide medium is air; the gray part in the figure represents the metal (gold), the blank part represents the medium (air), and all side microcavities are open The oral cavity is directly connected to the waveguide. The system structure parameters are set as: waveguide width t w =100μm, the first set of side microcavities ( figure 1 The three on the left in the center) have a width of t 1 =15μm, the height is h 1 =138μm, the distance between adjacent microcavities is l 1 = 150 μm; the second group of coupled microcavities ( figure 1 The three on the right side of the center) have a width of t 1 =10μm, the height is h 2 =191μm, t...

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Abstract

The invention relates to an electromagnetic wave multi-band filter with side micro-cavities and a metal-medium-metal waveguide coupled, and belongs to the technical field of filter design. According to the electromagnetic wave multi-band filter, the metal-medium-metal structure is used, the middle medium part is an insulating transparent layer and the waveguide is formed; multiple sets of side micro-cavities are manufactured in the metal parts and each set of side micro-cavities corresponds to a rectangular transmission stop band. Particularly, due to the fact that gold is very few in loss in the terahertz wave band, gold can be seen as an ideal electric conductor; the bandwidth of the filter can be adjusted by adjusting the width of the micro-cavities; multi-band filtering of the terahertz wave band can be realized. The electromagnetic wave multi-band filter has the advantages that the bandwidth and the number of the stop bands are adjustable; minimization and integration can be achieved conveniently; the electromagnetic wave multi-band filter can also be applied to other electromagnetic frequency bands such as the optical fiber communication frequency band and the microwave frequency band, and the requirements of different frequency bands can be met.

Description

technical field [0001] The invention relates to an electromagnetic wave multi-band filter coupled with a side microcavity and a metal-medium-metal waveguide, and belongs to the technical field of filter design. Background technique [0002] Terahertz radiation is electromagnetic radiation with a frequency between 0.1 and 10 THz. It has the advantages of strong penetrating ability, low photon energy, and wide spectrum, making it have potential applications in safety inspection, non-destructive testing of materials and structures, and wireless communication. The transmission of terahertz wave is an important part in the research of terahertz wave communication system, and in the communication system, filter is an important part. At present, the terahertz filter structures studied at home and abroad mainly include the following types: (1) terahertz filters based on metamaterials; (2) terahertz filters based on one-dimensional photonic crystal structures; (3) terahertz filters b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/20H01P1/207
Inventor 张用友董广大邹炳锁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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