Stripline filter with combline resonators

Details Stripline filter with combline resonators Stripline filter with combline resonators

1988-10-31

1990-10-16

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333204, H01P 1203, H01P 1205

Patent

active

049638432

ABSTRACT:
A combline stripline filter includes a number of conductive strips, each connected to ground on one end and capacitively loaded to ground at the other end. Input and output pads will make a surface mountable connection to a printed circuit board. Tuning is provided for by removing ground over the extension ends of the outside resonators. The center resonators are tuned by removing metal from areas on the cover that are connected to the resonators by plated through holes. Undesired capacitance is compensated for by rounding the ends of the resonators and the opposing ground planes.

REFERENCES:
patent: Re31470 (1983-12-01), Bedard et al.
patent: 3451015 (1969-06-01), Heath
patent: 3579152 (1971-05-01), Moore
patent: 4157517 (1979-06-01), Kneisel et al.
patent: 4418324 (1983-11-01), Higgins
patent: 4488130 (1984-12-01), Young et al.
patent: 4551696 (1985-11-01), Moutrie et al.
patent: 4609892 (1986-09-01), Higgins, Jr.

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