Polarization-insensitive SWG and its Application into Holographic Antenna Design

Abstract

Surface-wave waveguides (SWG) are generally sensitive to the polarization direction due to different dispersion characteristics for TE and TM modes and therefore limitations exist in many practical applications. In this paper, a polarization-insensitive SWG, which could support both TE and TM modes with the same phase velocity is introduced and holographic antennas with broadside radiation and polarization-reconfigurable property are implemented based on the proposed SWG.