Experimental and numerical investigation of dielectric resonator antenna based on doped Ba(Zn1/3Ta2/3)O-3 ceramic

This paper reports a numerical and experimental investigation of the microwave dielectric properties of ZrO2 and Cr2O3 doped Ba(Zn1/3Ta2/3)O-3 ceramic prepared the conventional solid-state ceramic route. The influence of these doping on the dielectric properties in the microwave frequencies of the Ba(Zn1/3Ta2/3)O-3 matrix is investigated. The pure sample showed a dielectric permittivity around 28.98, with loss of around 10(-5) and close to zero. ZrO2 and Cr2O3 were added to the pure specimen with differents amounts 0.5mol% and 1mol%. The experimental and theoretical characteristics of the resonator like return loss, bandwidth, input impedance are in good agreement. The simulations of radiation patterns are presented. The samples showed a frequency response bandwidth (BW-10 dB) of around 3% (simulated) for the frequency operation.