A Dual Circular Polarized Antenna for mmWave Wireless Communications
This paper presents our study on an antenna with dual circular polarization operating in W Band. The antenna is capable of transmitting and receiving two orthogonal circular polarized signals (Left Hand Circular Polarization and Right Hand Circular Polarization) simultaneously to achieve Full Duplex hence twofold spectrum efficiency in mmWave wireless communication systems. It mainly consists of a stepped septum polarizer and a profiled smooth wall horn. The fabricated antenna shows 21% relative bandwidth from 76.8 GHz to 95 GHz with AR 1.9 dB, the return loss is better than 15 dB and isolation 20 dB for both LHCP and RHCP. It is also quite suitable to be used as a feed for a reflector antenna when high gain is also required besides high spectrum efficiency.
2019 13th European Conference on Antennas and Propagation (EuCAP)