A compact wideband 4-port circularly polarized dielectric resonator antenna

We present in this paper a novel wideband circularly polarized dielectric resonator antenna (DRA) covering the complete Global Navigation Satellite System (GNSS) frequency band (1150-1620 MHz). This antenna, considering its simplicity, provides excellent performance in terms of gain, axial ratio and beamwidth across the entire operating bandwidth while being relatively low profile and with a design permitting insertion of the RF front-end right below the antenna ground plane. Even though GNSS is the targeted application in this paper, this antenna can be used for other purposes, like in MIMO systems or as a polarization discriminator.