DIELECTRIC RESONATOR, DIELECTRIC FILTER, DIELECTRIC DUPLEXER AND COMMUNICATION APPARATUS

摘要

PURPOSE: A dielectric resonator, a dielectric filter, a dielectric duplexer are provided to reduce power loss in a small-size. CONSTITUTION: Through holes(2a,2b) are formed inside a dielectric block(1). The inner surfaces of these holes(2a,2b) respectively have thin film laminated electrode structure consisting of the laminated area of a thin film conductor layer(31) and a thin film dielectric layer(32) and an outermost conductor layer(33). An outer conductor(4) having a similar thin film laminated electrode structure is provided on the outer surface of the block(1). An outer conductor(4') having single layer electrode structure for the respective thin film conductor layers of an inner conductor and the outer conductor in common is formed on the short-circuit surface of the block(1).