Broadband high-power microwave adaptive protection device
A high-power microwave and protective device technology, applied in the direction of antennas, slot antennas, electrical components, etc., can solve the problems of increasing the protection bandwidth and inability to passband protection, and achieve low insertion loss, broaden the shielding effectiveness, and improve the protection effect.
Active Publication Date: 2021-09-17
SHANXI UNIV
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The invention belongs to the field of space strong electromagnetic field protection, and particularly relates to a broadband high-power microwave adaptive protection device. In order to solve the problems that an existing protection device is low in working frequency band and narrow in bandwidth, the device comprises a switch type metasurface, two layers of band-pass frequency selection surfaces and three layers of dielectric plates. The switch type metasurface is printed on the upper surface of the upper-layer dielectric plate; the two layers of band-pass frequency selection surfaces are printed on the upper surfaces of the middle-layer dielectric plate and the lower-layer dielectric plate, and the two layers of band-pass frequency selection surfaces are the same in structure. An air layer is arranged among the three layers of dielectric plates; each unit of the switch type metasurface is composed of two square metal rings, and the metal ring on the outer side is connected with the adjacent unit to form a grid structure. Four gaps are etched at the midpoints of four edges of the inner-layer square ring, and PIN diodes are bridged on the four gaps; each unit structure of the band-pass frequency selection surface is formed by etching four rhombic gaps on a metal sheet.
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