Hybrid Cylindrical Dielectric Resonator Antenna for Microwave Applications

In this article, simulation studies of hybrid cylindrical dielectric resonant antenna (CDRA) have been carried out for multi-band applications. Staircase-shaped microstrip feed is utilised to excite the cylindrical dielectric resonator. The proposed antenna shows quad-band characteristics i.e. 5.02- 5.13 GHz, 5.48-5.75 GHz, 5.82-5.9 GHz, and 6.33-6.57 GHz with impedance bandwidth of 110 MHz, 270 MHz, 80 MHz and 240 MHz respectively. The impedance bandwidth and radiation characteristics of proposed antenna have been extracted with the help of Ansoft High Frequency Structure Simulator (HFSS) software. The proposed antenna affords compact size, appropriate gain and high radiation efficiency over the entire bands. The proposed antenna can be utilized for microwave applications between 5-6.5 GHz