Patent ID: 6940371

Claim:
A dielectric resonator, comprising: a dielectric ceramic comprising: a major component which contains a rare earth element (Re), Al, Sr, and Ti as metal elements, wherein a composition formula of the major component is expressed by a molar ratio of aRe 2 O 3 -bAl 2 O 3 -cSrO-dTiO 2 in which a, b, c, and d satisfy the following formula; 0.113≦a≦0.172, 0.111≦b≦0.171, 0.322≦c≦0.388, 0.323≦d≦0.396, and a+b+c+d=1.000; and a sub-component which contains 0.01 to 2 parts by weight of Fe as an element on the basis of Fe 2 O 3 , with respect to 100 parts by weight of the major component; a metallic case within which the dielectric ceramic is arranged; and a support within the metallic case for supporting the dielectric ceramic.