Tuned circuits

Details Tuned circuits Tuned circuits

1978-04-14

1980-06-10

Gensler, Paul L.

Wave transmission lines and networks

Resonators

Coaxial or shielded

333226, H01P 704

Patent

active

042075483

ABSTRACT:
A coaxial resonator is provided having an outer conductor with top and bottom closures and a substantially central opening through the top closure through which a tubular member forming a center conductor extends. The center conductor also comprises a plunger which is moveable within the tubular member such that the electrical length of the center conductor can be varied to effect tuning of the resonator.
The tubular member and the plunger are spaced apart in slidable relationship one with the other and as the bottom end of the tubular member represents essentially a short circuit, at that point there is no physical electrical contact provided between the tubular member and the plunger, thus overcoming several disadvantages of prior art resonators which utilized "finger" electrical contact at that point.

REFERENCES:
patent: 2103515 (1937-12-01), Conklin et al.
patent: 2544674 (1951-03-01), Hagen et al.
patent: 2594895 (1952-04-01), Feiker, Jr.
patent: 2637782 (1953-05-01), Maynuski
patent: 2666185 (1954-01-01), Hulstede et al.
Very High Frequency Techniques, Harvard U. Radio Research Lab., McGraw-Hill, N.Y., 1947, vol. II, pp. 920-939.

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