Abstract:
The microwave properties of ceramic dielectric resonators in a stack configuration are investigated using two different dielectric materials with opposite temperature coefficients of resonant frequency in the temperature range 50-300 K. The two dielectrics, which have been studied, are Ba(5)Nb(4)O(15) and 5ZnO-Nb(2)O(5), synthesized by the conventional solid-state ceramic route. The temperature coefficient of resonant frequency of the stack resonator is tuned by varying the volume fraction of 5ZnO-Nb(2)O(5). Temperature coefficient of resonant frequency slowly changed from a non-linear to almost a linear behavior with increase in the volume fraction of 5ZnO-Nb(2)O(5).
