DIELECTRIC FILTER AND DIELECTRIC DUPLEXER AND COMMUNICATION EQUIPMENT

摘要

PURPOSE: To constitute a compact dielectric filter capable of independently and easily designing a coupling capacity and a resonance frequency while acquiring a sufficient coupling capacity. CONSTITUTION: Inner conductor forming holes 2a-2d on whose faces inner conductors 3a-3d are respectively formed are arranged from one face to the opposite other face of a dielectric block 1, and an outer conductor 4 is formed on the outer face. Protruding parts 7a-7c are respectively arranged between the inner conductor forming holes 2a-2d on one opening faces of the inner conductor forming holes 2a-2d. Then, coupling electrodes 5a-5d are formed on the side faces of the protruding parts 7a-7c and the opening faces of the inner conductor forming holes 2a-2d. Also, input and output electrodes 6a and 6b are formed so as to be connected to the coupling electrodes 5a and 5d on the outer face of the dielectric block 1.