Circular Polarized 30-pointed Star Wideband Antenna with Cross Slot

Abstract

One of the circular polarization advantages of circular polarized antennas is their ability to minimize the effects of polarization mismatch. By using a circularly polarized antenna, the polarization of the received signal can be effectively matched regardless of the orientation of the receiving antenna. A cross-slot 30-pointed star wideband antenna is implemented in this paper to achieve circularly polarized features. The cross-slot improved the antenna axial ratio bandwidth and gain at WLAN working frequency, giving the antenna circular polarization. The slot’s length and width are observed on its influence on impedance and axial ratio bandwidth.