LHCP and RHCP enhancement on 30-pointed star antenna with cross slot

Abstract

Circular polarized antennas of fer the advantage of minimizing polarization mismatch, as they can effectively align with the polarization of the received signal disregarding of the orientation of the receiving antenna. This paper introduces a wideband antenna design featuring a cross-slot 30-pointed star configuration to enhance the circular polarization. The incorporation of the cross-slot enhances the antenna’s axial ratio bandwidth and gain at 2.4 GHz, enabling it to produce both left-hand circular polarization (LHCP) and right-hand circular polarization (RHCP). The dimensions of the slot, including its length and width, are examined to determine their impact on RHCP and LHCP.