System of dielectric ceramic compositions suitable for microwave applications

摘要

A system of dielectric ceramic compositions suitable for various microwave applications. The system comprises a plurality of stoichiometrically-related compositions, each composition having its own particular set of dielectric properties and consisting essentially of a sintered mixture represented by the general formula:PP BaTi.sub.4-w M.sub.w O.sub.9 --xZn.sub.2 TiO.sub.4 --yBaO--zTa.sub.2 O. sub.5PP wherein M is at least one type of metal and 0.0. ltoreq.w≦about 0.05 and wherein x, y, and z are molar fractions of respective components with values within the following respective ranges: 0.0≦x≦about 0.45; about 0.01≦y≦about 0.20; and 0.0≦z≦ about 0.10.