Compact Cylindrical Dielectric Resonator Antenna for MSS Handheld Terminals

This paper presents a compact cylindrical Dielectric Resonator Antenna [ 39 X 39 X 12 mm
³
] for Multipurpose MSS Ground (Handheld) Terminal Application. DRA is realized using Ceramic material having low Loss Tangent and dielectric constant of 20. The Right Hand Circularly Polarization has been achieved using dual feed (two orthogonal modes) lateral excited by Wilkinson Power divider (fabricated on Low dielectric constant substrate) beneath the ground plane. A Novel idea of grooved ground plane is implemented in order to ensure proper adhesion of DR Block to the Ground plane so that air gap does not exist in the realized hardware, which would cause frequency shift in DRA is negligible. The Gain of the Antenna is better than 2.5 dB up to (± 45°) over the desired frequency band (2.56 - 2.69 GHz.), while Axial ratio is less than 0.3 dB in the range (θ ± 45°) in the entire band. Antenna is having wide return loss bandwidth (better than 20 dB in the desired Band, while 17dB return loss Bandwidth is around 15%. The antenna was characterized with terminal itself and met all performance requirements.