Bandwidth Improvement of a Cone-Inverted Cylindrical and Cross Hybrids Dielectric Resonator Antennas

This work employs the coaxial probe method to stack and excite two cone-inverted cylindrical cross-hybrid dielectric resonator antennas at a standard operating resonant frequency of 5.438 GHz. A drawback these Dielectric Resonator Antennas (DRAs) is their narrow bandwidth. For good antenna performance, stacked DR geometry thick substrate with low constant are desired since this provides large bandwidth, better radiation power, reduces conductor loss nonappearance surface waves. Many approaches, such as changing shape resonator, have been used enhance Using DRA, which has lowest constant, increases bandwidth electromagnetic energy. In current work, improvement was significantly achieved by proposed varying size. novel hybrid DRA configuration increase 89.27% 149.23% due antennas, respectively. The designed numerically via Finite Difference Time Domain (FDTD) method. Several parameters like return loss, input impedance (verified ) pattern calculated. Furthermore, stacked-hybrid technique antenna's useful for broadband communication demand wireless.