Three-band switchable metamaterial microwave absorber/reflector

A technology of metamaterials and absorbers, applied in electrical components, antennas, etc., to solve problems such as inability to apply electromagnetic waves

Active Publication Date: 2018-12-14
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is worth mentioning that the key to realizing these two types of absorbers / reflectors is to control the state of the diodes through the bias network. Currently, the existing feed network is only suitable for single-band and dual-band switchable metamaterial absorbers. It cannot be applied to fields that need to absorb electromagnetic waves of more than two frequency bands

Method used

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  • Three-band switchable metamaterial microwave absorber/reflector
  • Three-band switchable metamaterial microwave absorber/reflector
  • Three-band switchable metamaterial microwave absorber/reflector

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Embodiment Construction

[0023] Using circuit board etching technology, open straight cross structure 2, open windmill structure 1, open square ring structure 3, open straight cross structure 2, The top of the open windmill structure 1 has a disconnection, and the middle part of the side of the open square ring structure 3 has a disconnection, such as Figure 1-Figure 3 As shown, a hole is punched at the top of the open straight cross structure 2 and the open windmill structure 1. The diameter of the hole is 0.6 mm, and the metal strip is penetrated to connect to the bottom metal plate 12. The size of the open straight cross structure 2 is b1=9.8 mm, d1=7.3mm, the line width is 1.4mm; the size of the open windmill structure 1 is R=3.5mm, h=0.4mm and the line width is 1.6mm; the size of the open square ring structure 3 is b2=21.21mm, the line width is 0.5mm; the unit crystal wrapping length is 30mm. The upper and lower bias lines (6, 8) control the silicon diode D in the split square ring structure 3 ...

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Abstract

The invention relates to the field of microwave absorbing materials. A 3-band switchable metamaterial microwave absorb/reflector is composed of metamaterial unit crystal cladding continuously and periodically arranged, and each metamaterial unit crystal cladding comprise a metal base plate layer, a dielectric substrate layer and a metal pattern layer, wherein that metal pattern layer is composed of an open straight cross structure, an open windmill structure and an open square ring structure. Seven absorption effect and one total reflection effect can be realized in a certain microwave range by meticulously design that structure of the resonant unit and the feeding network and controlling the state of the diode at different positions.

Description

technical field [0001] The invention relates to the field of microwave absorbing materials. Background technique [0002] With the development of wireless communication and the upgrading of electronic products, electromagnetic wave pollution and interference problems are becoming more and more serious. For example, radio broadcast communication, communication radar, and navigation transmission equipment communication can all create electromagnetic pollution and interference, thereby affecting the quality of wireless communication, aircraft navigation, and the normal operation of various precision electronic equipment. Therefore, the development of absorbing materials, especially the development of electromagnetic waves that can selectively absorb one or more frequency bands is particularly necessary. [0003] A switchable absorbing metamaterial is a material that can selectively absorb the energy of electromagnetic waves incident on its surface. A network is used to contro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/14H01Q17/00
CPCH01Q15/0086H01Q15/14H01Q17/007
Inventor 杨荣草徐建平王佳云张文梅
Owner SHANXI UNIV
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