Abstract: In this work, for absorbing waves below the cutoff frequency of a rectangular waveguide (RWG), i.e., absorb the evanescent waves (EWs), a single-layer EW absorber with an ideal lossy ...

Abstract: A low-profile broadband omnidirectional metasurface (MTS) antenna is proposed in this study based on characteristic mode analysis (CMA). The desired omnidirectional radiation pattern is ...