Controlling the Gain and Frequency using Dielectric Resonator in Microstrip Patch Antenna

The increasing use of wireless and satellite communication systems demand the antennas for different systems and standards with properties like reduced size, broadband, multiband operation, moderate gain etc. The planar and dielectric resonator antennas are the present day antenna designer’s choice. However, conducting microstrip patch antennas inherently have a narrow bandwidth. In this dissertation, controlling the gain and frequency using DRA in microstrip patch antenna is done. The simulation has been done by using software Ansoft HFSS 15.0. The proposed design uses a rectangular ground plane and the squares of DRA and FR-4 substrates are placed alternatively above the ground plane. The antenna uses FR-4 (ɛr=4.4) and DRA (ɛr=12) as a substrate material to achieve wide bandwidth. Microstrip line feed has been used for feeding the antenna. The patch is of a square shape having side 6mm. study and results demonstrate the proposed antenna is competent enough to work in the Ku band (12-18) GHz. The antenna has a ground size of 50×50 mm2 and offers impedance bandwidth of 6.3 GHz covering the entire Ku band.