The dielectric porcelain constituent null forsterite

摘要

PROBLEM TO BE SOLVED: To provide a dielectric porcelain composition for high-frequency use with a large Q×f₀ value wherein the relative dielectric constant ε_r is adjustable within the range of 8-20 and the absolute value of the temperature coefficient τ_f of the resonant frequency f₀ is easily adjustable within the range of ≤30 ppm/°C.;SOLUTION: The dielectric porcelain composition comprises forsterite (Mg₂SiO₄), zinc titanate (Zn₂TiO₄) and calcium titanate (CaTiO₃) and is represented by the formula: xMg₂SiO₄-yZn₂TiO₄-zCaTiO₃ (wherein 21x88; 4y71; 4≤z≤14; and x+y+z=100 (mol%)).;COPYRIGHT: (C)2004,JPO