Aug 13, 2009 #1 Y y99lx Member level 1 Joined Jul 29, 2009 Messages 39 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,490 Dear cavity filter experts, Please discuss the soltions to improve the stability over temperature varying. Are there some commonly used solutions? thanks y99lx
Dear cavity filter experts, Please discuss the soltions to improve the stability over temperature varying. Are there some commonly used solutions? thanks y99lx
Aug 13, 2009 #2 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,047 Helped 1,376 Reputation 2,748 Reaction score 1,056 Trophy points 1,393 Location New England, USA Activity points 37,908 plated invar cavities, tuning screws with a controlled mechanical expansion vs. temperature.
Aug 13, 2009 #3 Y y99lx Member level 1 Joined Jul 29, 2009 Messages 39 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,490 thanks, but the expansion is usually not controllable. Is there any special design consideration for this problem?
thanks, but the expansion is usually not controllable. Is there any special design consideration for this problem?
Aug 13, 2009 #4 B biff44 Advanced Member level 6 Joined Dec 24, 2004 Messages 5,047 Helped 1,376 Reputation 2,748 Reaction score 1,056 Trophy points 1,393 Location New England, USA Activity points 37,908 You make the cavity and tuning screw out of materials with different coefficients of expansion. As one drifts one way over temperature, the other brings it back.
You make the cavity and tuning screw out of materials with different coefficients of expansion. As one drifts one way over temperature, the other brings it back.
Aug 13, 2009 #5 kspalla Advanced Member level 4 Joined Aug 19, 2008 Messages 1,253 Helped 258 Reputation 516 Reaction score 94 Trophy points 1,328 Location Hyderabad, Andhra Pradesh, India Activity points 6,813 Increase the thickness and fix to heat sink