DIELECTRIC CERAMIC MATERIAL AND DIELECTRIC RESONATOR

摘要

PURPOSE:To provide a stable dielectric ceramic material having a high Q value of a no-load in a microwave region, where fluctuation is reduced, and a dielectric constant (epsilonr) is stabilized, and a temperature coefficient (tauf) of a resonant frequency in a resonator is easily set to a desirable low value with high accuracy, and a dielectric resonator using the same. CONSTITUTION:A dielectric porcelain material is prepared by adding 0.01-0.08wt.% of Co calculated in terms of Co3O4 as an additive component into a basic composition expressed by a general formula: Ba{Zn1/3(NbxTa(1-x)2/3}O3 (wherein 0