DIELECTRIC CERAMIC COMPOSITION FOR HIGH-FREQUENCY USE AND METHOD FOR PRODUCING THE SAME, DIELECTRIC CERAMIC FOR HIGH-FREQUENCY USE AND METHOD FOR PRODUCING THE SAME, AND HIGH-FREQUENCY CIRCUIT ELEMENT USING THE SAME

摘要

There is provided a dielectric ceramic composition for high-frequency use represented by a composition formula of a(Sn,Ti)O2-bMg2SiO4-cMgTi2O5-dMgSiO3. In the composition formula, a, b, c and d (provided that a, b, c and d are mol%) are within the following ranges: 4≤a≤37, 34≤b≤92, 2≤c≤15 and 2≤d≤15, respectively, and a+b+c+d=100. The dielectric ceramic composition for high-frequency use has a relative permittivity εr of 7.5-12.0, a Qm×fo value of not less than 50000 (GHz) and an absolute value of a temperature coefficient τf of resonance frequency fo of not more than 30 ppm/°C.