Circularly Polarized High Gain Spherical Dielectric Resonator Antenna Operating on Higher-Order Mode

Abstract

This paper proposed a circularly polarized (CP) high gain spherical dielectric resonator antenna (DRA) operating on higher-order mode. A spherical dielectric is excited by a right-hand circularly polarized (RHCP) microstrip patch. The spherical DRA has same polarization with the microstrip patch and has high gain because it operates on higher-order mode. The prototype antenna was fabricated by a spherical ceramic, which dielectric constant is 13, and operated on the TE301 mode at 5.88GHz with a peak RHCP gain of 8.92dBi.