Suspended microstrip patch antenna with dielectric resonator loading for enhanced bandwidth

This paper reports experimental investigations on suspended microstrip rectangular patch antennas at X-band with dielectric resonator loading. By placing the resonator at appropriate position on the patch, an impedance bandwidth of about to 12.3% and an improvement in gain over the unloaded case by about 1 to 2 dB have been achieved, without much change in the radiation pattern.