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In article no. 1900069 by Shijun Ji et al., a polarizationinsensitive ultra‐broadband metamaterial absorber (UMMA) is proposed. The UMMA's unit cell consists of a metal film and a multilayer‐crosscone structure separated by a dielectric layer. Through a larger number of calculations, analysis and optimization from physical parameters of electromagnetic wave and structural parameters on the absorber,...
This paper presents a polarization‐insensitive and ultra‐broadband metamaterial absorber (UMMA), which has higher absorption throughout the whole X‐band. The UMMA unit cell consists of a metal film and a multilayer‐cross‐cone structure separated by a dielectric layer. The calculation result shows that the UMMA's absorptivity is greater than 96% in the entire X‐band (8–12 GHz) and the UMMA is polarization‐insensitive...
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