Frequency Reconfigurable Hemispherical Dielectric Resonator Antenna Using Dual Split Rings

Abstract

The paper presents dual split ring aperture coupled hemispherical dielectric resonator antenna excited by microstrip feed for frequency tuning. The angle of rotation of the dual split ring is changed in order to tune the dual-band resonant frequency. The proposed antenna exhibits good radiation characters and it remains the same on varying the frequency. It’s mainly used in WiMAX application.