Hi Didier, I presumed you at one time knew the difference between voltage ratio, and power ratio dB, but your question gave the impression that you might have needed a tiny nudge to refresh your memory.
If both oscillators are in lock step, you obviously can combine them using an appropriately wound transformer to gain a 3dB increase in power. But it would seem that the noise, being random and independent, should add constructively as often as destructively. I don't know the answer to your question... I did once, but that was 30 years ago... but I get the feeling that the noise power is going to add up as some fractional power giving you a net improvement in signal to noise... probably close to 3dB, but not quite 3dB... I just don't remember anymore. -Chuck Harris Didier wrote: > Chuck, > > I am quite familiar with how to calculate a voltage or power ratio in dB, > but refering to the first issue, when you combine two oscillators, does the > noise improve by 3dB? > > Didier _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
