Single-passband bilateral wave-absorbing composite metamaterial and radome and antenna system including same

A metamaterial, single-passband technology, applied in antennas, radiation unit housings, electrical components, etc., to achieve the effect of reducing RCS and reducing the radar cross section
CN104993249AActive Publication Date: 2015-10-21NAT UNIV OF DEFENSE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NAT UNIV OF DEFENSE TECH
Publication Date
2015-10-21

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Abstract

The invention belongs to the technical field of materials and radomes, and specifically relates to a single-passband bilateral wave-absorbing composite metamaterial and a radome and an antenna system including the same. The single-passband bilateral wave-absorbing composite metamaterial comprises a dielectric substrate (100) made of a non-conductive material and four periodic metamaterial structure layers embedded into the dielectric substrate. The four periodic metamaterial structure layers are respectively a resistive film layer (102), a first metal patch layer (103), a second metal patch layer (104) and a third metal patch layer (105) in sequence from top to bottom. The metal patch layers for realizing frequency selection enable an array antenna to keep good radiation characteristic and communicate freely in an X band; and meanwhile, in the S band, Ku band and K band at the two sides of the passband of the X band, the resistive film layer with wave absorption characteristic and the metal patch layers in the composite metamaterial radome work together, and electromagnetic wave which is incident on the radome and then reflected back by the metal patch layers is well absorbed.
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Description

technical field

[0001] The invention belongs to the technical field of materials and radome, and in particular relates to a single-pass-band double-side wave-absorbing composite metamaterial, a radome, and an antenna system. Background technique

[0002] Metamaterial is a kind of artificial synthetic material, which artificially changes the electromagnetic properties of the dielectric substrate by arranging the periodic unit structure smaller than the wavelength neatly and rationally on the surface of the dielectric substrate or embedded in the dielectric substrate, so as to realize the function of manipulating electromagnetic waves. The periodic unit structure can be realized by metal foils, resistive and capacitive thin films and magnetic materials attached to the dielectric substrate. Generally speaking, the metal foil periodic unit structure on the metamaterial dielectric substrate mainly realizes the frequency selection function, so that the metamaterial can realize the...

Claims

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