Dielectric block filter having first and second resonator arrays

Wave transmission lines and networks – Coupling networks – Wave filters including long line elements

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333206, 333203, H01P 1205

Patent

active

057932670

ABSTRACT:
In a dielectric filter comprising a dielectric block having outer conductors formed on the outer surfaces of the dielectric block, first and second arrays of through holes are formed in the dielectric block and have inner conductors formed on the inner surfaces thereof. A plurality of stages of dielectric resonators are constructed by the inner conductors formed in the through holes of the first array, the dielectric substance of the dielectric block and the outer conductors formed on the dielectric block, and the neighboring resonators of the first array are coupled to one another to form a band pass filter portion. Further, another plurality of stages of resonators are constructed by the inner conductors formed in the through holes of the second array, the dielectric substance of the dielectric block and the outer conductors formed on the dielectric block, and each of the resonators of the second array and those of the band pass filter portion are coupled to each other at each stage.

REFERENCES:
patent: 4431977 (1984-02-01), Sokola et al.
patent: 5191305 (1993-03-01), Frost et al.
patent: 5537082 (1996-07-01), Tada et al.

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