Varactor-tuned helical resonator filter

Details Varactor-tuned helical resonator filter Varactor-tuned helical resonator filter

1982-12-20

1984-07-10

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333207, 333212, 333219, 333235, H01P 1201, H01P 1205

Patent

active

044595719

ABSTRACT:
A helical cavity resonator filter utilizes varactor tuning diodes positioned within each helical resonator coil. The diodes are positioned along the longitudinal axes of the coils so as not to interfere with the non-axial electromagnetic fields of the cavities associated with each helical resonator coil.

REFERENCES:
patent: 3246266 (1966-04-01), Racy
patent: 3337791 (1967-08-01), Barton et al.
patent: 3508177 (1970-04-01), Suzuki
patent: 3703689 (1972-11-01), McAtee
patent: 3818389 (1974-06-01), Fisher
patent: 3895325 (1975-07-01), Fischer et al.
patent: 3936776 (1976-02-01), Sundquist

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