Voltage tunable bandpass filter

Details Voltage tunable bandpass filter Voltage tunable bandpass filter

1988-03-09

1989-05-30

Laroche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333235, H01P 1203

Patent

active

048354996

ABSTRACT:
A voltage tunable bandpass filter consisting of a plurality of parallel resonators electromagnetically coupled and having tuning diodes coupled to a first end. The resonators are DC isolated at a second or RF grounded end of each resonator. A voltage source reverse biases the tuning diodes from the second or less critical end of the resonators.

REFERENCES:
patent: 3673509 (1972-06-01), Cooper, Jr.
patent: 3889214 (1975-06-01), Petitjean et al.
patent: 4577170 (1986-03-01), Hayashi
patent: 4714906 (1987-12-01), D'Albaret et al.
Hunter, I. C. and Rhodes, J. D., "Electronically Tunable Microwave Bandpass Filter"; IEEE Transaction on Microwave Theory & Techniques; vol. MTT-30, No. 9; Sep. 1982; pp. 1354-1360.

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