Dielectric resonator apparatus and high-frequency module

摘要

A dielectric substrate (2) is provided on its both main surfaces with conductors (2a, 2b) each having two circular openings such that the openings on both main surfaces oppose each other. On one conductor (2a) of the dielectric substrate (2), an insulating layer (2c) is formed. On the insulating layer (2c), an input electrode (4a) and an output electrode (4b) are formed. Electrically conductive plates (3a, 3b) are disposed and secured such that they sandwich the dielectric substrate (2) with gaps therebetween.