Dielectric filter coupling structure having a compact terminal a

Details Dielectric filter coupling structure having a compact terminal a Dielectric filter coupling structure having a compact terminal a

1991-10-28

1993-05-25

Pascal, Robert J.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, H01P 1205

Patent

active

052143988

ABSTRACT:
A plurality of coaxial type dielectric resonators 1A, 1B each having a dielectric 5 filled between an inner conductor 4 and an outer conductor 3 a dielectric block 2 for capacitor coupling between resonators and between the resonators and input/output terminals. The dielectric block has holes 6A, 6B opposed to the inner conductors 4 of the dielectric resonators, with electrodes 7A and 7B being formed on the inner surfaces of the holes. The electrodes 7A and 7B of the coupling dielectric block and the inner conductors 4 of the resonators associated therewith are connected through electroconductive spacers 9. Further, an input terminal electrode 8A and an output terminal electrode 8B are each formed on at least one of outer peripheral faces of the coupling dielectric block 2. The terminal electrodes 8A and 8B are both formed on one side, outer peripheral face of the dielectric block, or are formed on both end, outer peripheral faces respectively of the dielectric block. This construction permits a sufficient reduction in size of a dielectric filter while retaining desired characteristics.

REFERENCES:
patent: 4276525 (1981-06-01), Nishikawa et al.
patent: 4703291 (1987-10-01), Nishikawa et al.
patent: 4745379 (1988-05-01), West et al.
patent: 4800347 (1989-01-01), Yorita et al.
patent: 4983938 (1991-01-01), Sasaki et al.
patent: 4987393 (1991-01-01), Yorita et al.

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