Patent ID: 8765621

Claim:
A dielectric ceramic composition for high-frequency use characterized by being represented by a composition formula of a(Sn,Ti)O 2 -bMg 2 SiO 4 -cMgTi 2 O 5 -dMgSiO 3 in which 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, and the (Sn,Ti)O 2 is (Sn 0.8 ,Ti 0.2 )O 2 or (Sn 0.2 ,Ti 0.8 )O 2 .