Dielectric Resonators for Microwave and Millimeter Wave Applications

Three types of materials for dielectric resonators are presented in this paper. The Pb-BNT materials show the highest dielectric constant (~85). A very small controllable temperature coefficient Tf in the range (-2 divide +4) ppm/degC can be achieved by using dielectric resonators Mg-(Zr<sub>0.8</sub>Sn<sub>0.2</sub>)TiO<sub>4</sub>. On the other hand, the resonators made of Ba(Zn<sub>1/3</sub>Ta<sub>2/3</sub>)O<sub>3</sub> exhibit the highest values for the Qxf product, ranging from 50000 to 130000 GHz, which make them attractive for millimetre wave applications.