Incrementally tuned RF filter having pin diode switched lines

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

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333235, H01P 1203

Patent

active

046238565

ABSTRACT:
A length of transmission line having a plurality of capacitors and a plurality of shorter lengths of transmission line coupled thereto by pin diodes which are individually operable to connect any combination of capacitors and transmission lines to the basic transmission line for changing the center frequency thereof in incremental steps across a desired band of frequencies.

REFERENCES:
patent: 3482178 (1969-12-01), Habian
patent: 3593225 (1971-07-01), Fisher
patent: 4186360 (1980-01-01), Ohashi
patent: 4250475 (1981-02-01), Schwarzmann
patent: 4267538 (1981-05-01), Assal et al.
patent: 4467296 (1984-08-01), Cohen et al.

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