Wide-angle insensitive plasma meta-material broadband wave absorber

Abstract

The invention discloses a wide-angle insensitive plasma meta-material broadband wave absorber of which the structure comprises a bottom metal reflecting plate and a dielectric substrate and solid state plasma resonant units which are arranged on the metal plate. The plasma meta-material is formed through special design, the solid state plasma is implemented by the array formed by the PIN units, the PIN units are isolated by isolating layers, and the PIN unit array is controlled and excited through a programmable logic array loaded on the two ends so as to obtain the solid state plasma. The solid state plasma resonant units have two working states: the excited state and the unexcited data. The plasma meta-material wave absorber has great absorbing effect for the TE and TM polarized waves and has great absorbing effect for the wide-angle incident electromagnetic waves and controls the excitation area of the resonant units formed by the solid state plasma to realize excitation of different resonant units through programming so as to achieve the objective of dynamic regulation and control of different frequency of the wave absorber.

Description

technical field [0001] The invention relates to a large-angle insensitive plasma metamaterial broadband wave absorber, which belongs to the fields of radio communication and microwave devices. Background technique [0002] In recent years, with the development and progress of electronic science and technology, electromagnetic metamaterials have broad application prospects in the fields of physics, electromagnetism, optics, materials science, etc. An important application of electromagnetic metamaterials in electromagnetism is to produce Electromagnetic metamaterial absorber. [0003] With the development of military science and technology, the radar has all-weather, anti-jamming, and long-range detection capabilities, and the electromagnetic metamaterial absorber has become an integral part of the radar, but the existing electromagnetic metamaterial absorber is only for specific frequencies. Electromagnetic waves have effective absorption, and the absorption bandwidth is na...

AI Technical Summary

Problems solved by technology

[0003] With the development of military science and technology, the radar has all-weather, anti-jamming, and long-range detection capabilities, and the electromagnetic metamaterial absorber has become an integral part of the radar, but the existing electromagnetic metamaterial absorber is only for specific frequencies. Electromagnetic waves have effective absorption, and the absorption bandwidth is narrow, which cannot achieve good absorption in the entire spectral range. When the electromagnetic wave is incident at a large angle, the absorption performance of the absorber is poor.

Moreover, it is difficult to obtain a tunable absorption spectrum for a metamaterial absorber in the traditional sense. To obtain a tunable absorption spectrum, a large number of lumped components have to be introduced, the control circuit is complex, and it is not conducive to integration and chip-based integrated manufacturing.

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