Ultra-thin and flexible microwave metasurface absorbers based on resistive patches

HIGHLIGHTS

• What: The authors provide a systematic approach for designing ultrathin and flexible, microwave MSAs, based on resistive metal patches of deep submicron thickness, with the MSA`s thickness reasonably close to the estimated theoretical minimum by Rozanov`s limit. By the coupled-mode theory (CMT), the authors determine the necessary surface resistance and appropriate patch dimensions that maximize the absorption. The authors design an ultrathin, polarization-insensitive MSA operating in the X-band in the vicinity of 11 GHz. The authors aim at achieving broadband operation, hence the authors focus on non-uniform MSs, that combine patches . . .
  

   

  

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