An FSS based circular polarizer for high-speed wireless communication at 75\nGHz is presented. It has been designed on a low loss substrate with\ncross-dipole elements. Both simulation and measured results showed more\nthan 98% circular polarization at 75 GHz. Moreover, 3 dB axial-ratio bandwidth\nof 6.8 GHz (Simulation) and 7.8 GHz (Measured) has been achieved.\nThe proposed design has many advantages over the recently published research\nsuch as simplicity, low-profile, percentage bandwidth, frequency of\noperation and relative insertion loss.
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