TM-MODE DIELECTRIC RESONATOR, TM-MODE DIELECTRIC FILTER USING THE SAME AND TM MODE DIELECTRIC DUPLEXER

摘要

A dielectric resonator designed so that there is substantially no loss in a conductor on the surface of a casing forming a shielded cavity, and so that the unloaded Q and the resonant frequency can be changed independently of each other. A cylindrical dielectric block (2) having a pair of electrodes (3, 4) formed on its two opposite surfaces is disposed in a metallic shielded-cavity casing (5) so that one (4) of the electrodes (3, 4) is in contact with an inner bottom surface of the shielded-cavity casing (5). This electrode (4) is electrically connected to the shielded-cavity casing (5) by soldering or the like. IMAGE