| 摘要 |
PURPOSE:To attain miniaturization of a band elimination filter by arranging a connecting board to an open end face of plural dielectric coaxial resonators arranged in parallel and providing a prescribed electrode and an inductance element to the connecting board. CONSTITUTION:An electrode 11 and an earth electrode 12 are formed to one major surface 2a of the connecting board 2 and an electrode 13 is formed to the other major surface 2b. Static capacitance is formed between the electrodes 13, 11 and the earth electrode 12 respectively. The electrodes are formed respectively to each dielectric coaxial resonator 1. The electrode 11 is connected respectively to each relevant inner conductor of the resonator 1. Further, the adjacent electrodes 13 are connected by the inductance element L. Since no 1/4 wavelength coaxial cable is used, a small-sized band elimination filter is obtained. |
