Helical resonator

Details Helical resonator Helical resonator

1976-07-06

1977-10-04

Gensler, Paul L.

Wave transmission lines and networks

Attenuators

333 82B, H01P 700

Patent

active

040526844

ABSTRACT:
A helical resonator includes a helical coil within a metal enclosure, with the windings at one end of the coil reduced in diameter and shorted to each other so as to form a cylindrical conductive member. The cylindrical conductive member provides one plate of a variable capacitor the other plate of which is partially formed by one wall of the enclosure which is adjacent to the windings of reduced diameter. A screw extends through the one wall of the enclosure and into the cylindrical member. An adjustment of the screw controls the resonant frequency of the cavity.

REFERENCES:
patent: 2780727 (1957-02-01), Dreyer, Jr.
patent: 3247475 (1966-04-01), Buetow et al.

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