Absorption Enhancement of Low-Frequency Microwaves by Modulating Local Magnetic Fields using Plasmonic Metamaterials
In order to realize the absorption of radar waves in low-frequency band,the thickness of Mag-netic Absorbers(MAs)or the weight is on the increase under normal conditions,and actual applied poten-tialities are restricted.For the above-mentioned reasons,this paper proposes a method based on Plasma Meta-material(PM)to regulate the internal magnetic field of conventional MAs.The short metal wires are utilized for enhancing the magnetic field distribution in the entire local space between it and the metal backboard,and the overall structure will have a stronger absorption after adding conventional MAs.The simulated results show that the proposed Plasma Meta-material Absorber(PMA)can achieve efficient ab-sorption in the frequency band of 0.84～2.08 GHz at vertical incidence,and the bandwidth of-10 dB can still remain 0.7～2.95 GHz even at an incidence angle of 60°.This design method may find the potential applications in the fields of electromagnetic compatibility,wireless communication,and so on.
low-frequency wave absorptionplasma meta-materialslocal field modulation
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维普
