A Single Radiator-Based Circularly Polarized Antenna for Indoor Wireless Communication Applications

Abstract

This paper introduces a novel technique for inducing circular polarization in a single radiator through the implementation of a sequentially rotated feeding network. Analogous to the operational principles of sequentially rotated antennas employing multiple radiators, the creation of circular polarization (CP) with a solitary radiator becomes achievable through the distinctive phase and angular arrangement facilitated by the feeding network. This innovative approach not only results in a substantial reduction in complexity but also contributes to an overall reduction in antenna size, all while upholding commendable CP performance in terms of both axial ratio (AR) bandwidth and beamwidth.

Keywords

• Axial ratio (AR)
• AR bandwidth
• AR beam width
• circular polarization
• sequential rotation