Applied Sciences · 2021 · 19 citations · 24 references
EngineeringElectrical EngineeringMaterials ScienceElectronic MaterialsMicrowave EngineeringThin FilmsMicrowave AntennasMicrowave Device SimulationMicrowave MaterialsMicrowave ResonatorsOptical Thin FilmsThin Film Optical PropertiesAbsorber MaterialsIndium Tin Oxide Thin FilmsMetamaterialsMicrowave Absorbing MaterialsMicrowave AbsorptionPolyethylene TerephthalateResonant AbsorbersSplit-ring Resonators
We use indium tin oxide (ITO), one of the representative resistive materials, for the implementation of a metamaterial electromagnetic (EM) absorber with a high absorbance in a wide frequency range. Highly symmetrical split ring resonators made of ITO film are deposited on the polyethylene terephthalate with transparent and flexible features, and such a configuration causes the proposed absorber to be insensitive to polarization and incidence angles. The proposed absorber, with a profile of only 0.171λ, exhibits a wideband absorbance of 7.2 GHz to 27 GHz, with a 90% absorption criterion. A prototype is built, and all the computed expectations from the full-wave EM simulations in this work are verified experimentally.
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Metamaterial Electromagnetic Cloak at Microwave Frequencies
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Ultra-broadband microwave metamaterial absorber
Fei Ding, Yanxia Cui, Xiaochen Ge et al. · Applied Physics Letters · 2012 · 1K citations · Full text