Tunable resonant cavities having particular isolating choke

Details Tunable resonant cavities having particular isolating choke Tunable resonant cavities having particular isolating choke

1977-04-01

1978-10-24

Gensler, Paul L.

Wave transmission lines and networks

Attenuators

315 3961, H01P 706, H01J 2550

Patent

active

041224191

ABSTRACT:
The invention relates to a resonant cavity device such as a magnetron oscillator which is tunable by means of a tuning plunger associated with sealing bellows. A volume defined at least in part by the bellows and producing a range of spurious responses as the tuning plunger is moved is isolated from the resonant cavity or cavities of the device by an isolating choke. The choke may take the form of an annulus having a major radius of 1/4 .lambda. (where .lambda. is the mid-frequency of the tuning range) attached either to the plunger or to the main body of the device and between the bellows and the resonant cavity or cavities.

REFERENCES:
patent: 2611110 (1952-09-01), Powers
patent: 2657334 (1953-10-01), West
patent: 2807745 (1957-09-01), Moll
patent: 3125734 (1964-03-01), Ward
patent: 3885221 (1975-05-01), Lewis

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