MICROWAVE FILTER Russian patent published in 2008 - IPC H01P1/207 H01P1/30 H01P7/06 

FIELD: microwave engineering; radio electronic devices, primarily those for space vehicles.

SUBSTANCE: proposed microwave filter has cavity, temperature compensation device , and stop with threaded hole accommodating frequency adjuster in the form of screw. The latter and cavity are made of materials having different temperature coefficient of linear expansion. Screw is designed for deforming elastic cavity wall and is assembled of internal and external screws made of material s having different temperature coefficients of linear expansion. External screw has internal threaded hole accommodating internal screw.

EFFECT: ability of maintaining desired thermal stability of cavity resonant frequency at gradual variations in temperature coefficient of linear expansion.

3 cl, 2 dwg