Microwave cavity tuner

Details Microwave cavity tuner Microwave cavity tuner

H - Electricity

01

P

333/91

H01P 7/06 (2006.01) H01J 23/20 (2006.01)

Patent

CA 1192635

MICROWAVE CAVITY TUNER Abstract of the Disclosure In a microwave device, particularly a microwave local oscillator, frequency variations due to temperature changes are reduced by supporting the tuning element, for example a quartz or sapphire crystal, in the end of a tube of INVAR or other material having a low thermal coefficient of expansion. The tube projects into the cavity from a hole in one wall thereof. Preferably the tube is positively located relative to the cavity by means of an external lip on the tube abutting a shoulder formed by a reduced diameter part of the hold adjacent the cavity. The lip may be urged into positive contact with the shoulder by a spring washer acting between the end of the tube and the opposed end of a bush screwed into the hole. - i -

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