Dielectric filter, dielectric duplexer, and communication apparatus using the same

摘要

A dielectric filter and a dielectric duplexer adapted to two frequency bands formed by using a single component are disclose, in addition to a communication apparatus using the same. In this case, since a dielectric block used as the single component can be easily molded and grasped, production efficiency can be enhanced. The dielectric duplexer adaptable to two frequency bands is formed by disposing inner-conductor-formed holes acting as lambd/2 resonators and lambd/4 resonators in the single dielectric block.