A 60 GHz single-layer Fabry-Perot Cavity Antennas using sparse array for circularly polarized radiation

Circular Polarized (CP) antennas are useful in wireless communication since the CP waves will not be affected as they travel in different media. Moreover, the CP antennas compared to Linear Polarized (LP) antennas are less sensitive to the orientation angle between the transmitter and receiver. Unlicensed 7-GHz bandwidth at center frequency of 60 GHz is amenable for high data rate wireless communications. Due to high demand for the ISM 60GHz band to establish a secure and stable communication link, Circular Polarized high gain antennas are favorable.