Coaxial resonator having coupling electrodes and dielectric filt

Details Coaxial resonator having coupling electrodes and dielectric filt Coaxial resonator having coupling electrodes and dielectric filt

1996-09-10

1999-03-16

Lee, Benny

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, 333222, H01P 1202

Patent

active

058835547

ABSTRACT:
A coaxial resonator according to the present invention has an outer conductor on an outer peripheral surface of a dielectric block having at least four side surfaces and having a through hole provided in its approximately central part and an inner conductor on an inner peripheral surface of the through hole, and one of two end faces perpendicular to the through hole is opened and the other end face is short-circuited. A pair of an input electrode and an output electrode which are not brought into electrical contact with the outer conductor and are independent of each other is provided in a position in proximity to the opened end face on the outer peripheral surface of the dielectric block, and respective portions of both the electrodes are extended to the side surfaces, which are respectively adjacent to the electrodes, of the dielectric block. Consequently, the input electrode and the output electrode are capacitively coupled to each other, and the input electrode and the output electrode are respectively capacitively coupled to the inner conductor. Coupling capacitance can be adjusted by the areas of the electrodes.

REFERENCES:
patent: 4673902 (1987-06-01), Takeda et al.
patent: 4757288 (1988-07-01), West
patent: 5144269 (1992-09-01), Itoh
patent: 5208565 (1993-05-01), Sogo et al.

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