| 摘要 |
PROBLEM TO BE SOLVED: To obtain a filter characteristic with a large out-band attenuation by providing a connection electrode and an input output electrode to one dielectric resonator and providing a connection electrode and an electrode integrated with an input output electrode to other dielectric resonator. SOLUTION: The dielectric resonator 1 (2) is made up of a base 3 (4) made of a dielectric material and up of each conductor placed on the base 3 (4). Then a connection electrode 13 of the dielectric resonator 1 is opposed to a connection electrode 16 of the dielectric resonator 2 and they are connected by a conductive soldering material such as solder, and outer conductors 5, 6 are soldered by a conductive soldering material such as solder. Furthermore, input and output electrodes 12, 15 are connected by directly or indirectly using a conductive soldering material to a wiring pattern or the like provided to a base. Then the one dielectric resonator 1 is provided with the connection electrode 13 and the input output electrode 12 and the other dielectric resonator 2 is provided with the electrode integrated with the connection electrode 16 and the input output electrode 15 to obtain the filter characteristic with a large out-band attenuation.
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