DIELECTRIC RESONATOR, DIELECTRIC FILTER, AND DIELECTRIC DUPLEXER

摘要

This dielectric resonator has: a substrate (20) including a first conductor layer, a second conductor layer, and a dielectric layer formed between the first conductor layer and the second conductor layer; a plurality of conducting through-holes (10) penetrating the substrate (20), the conducting through-holes (10) being formed along a first loop, and at least the side walls of the conducting through-holes (10) being covered with a conductor; and a plurality of non-conducting through-holes (11) penetrating the substrate (20), the non-conducting through holes (11) being formed along a second loop defined inside the first loop, and the side walls of the non-conducting through-holes (11) being covered with a nonconductor or having the dielectric layer exposed thereto.