Fig. 7From: Ultra-wideband and Polarization-Insensitive Perfect Absorber Using Multilayer Metamaterials, Lumped Resistors, and Strong Coupling EffectsThe dielectric and ohmic losses of the substrates and the lumped resistances for the proposed PAM at 5.13, 14.49, 19.05, 20.77, and 25.42 GHz. a The volume loss density (VLD) of substrates at the resonance frequency. b The volume loss density (VLD) of lumped resistances at the resonance frequencyBack to article page