| 摘要 |
PURPOSE: To extend the band width of an integral dielectric filter having electrodes to obtain capacitive coupling on an adhered face. CONSTITUTION: Part of an outer conductive film 14 opposite to a capacitive coupling electrode between dielectric resonator units via a dielectric material is removed to expose a part 15 on which the dielectric material is exposed. Till a desired frequency characteristic is obtained, the conductor film of the outer conductor 14 is removed. Thus, number of electric force of lines reaching ground potential is less at the part 15 where the outer conductor is removed and the coupling capacitance is increased. Thus, the pass band width is extended. |
