Hello Martyn, Martyn Smith <[EMAIL PROTECTED]> wrote: Despite the AGC we still achieve good phase noise (-135 dBc/Hz @ 1 Hz with a -168 dBc noise floor) together with 130 dB isolation and 10 ps/C phase stability.
I have problems to understand, how your amplifier can achieve phase noise of -135 dBc/Hz @ 1 Hz. Such a dBc/Hz measure is related to a carrier, but where does the carrier in your amp come from? The same applies to the graph in your data sheet. This obviously shows the phase noise of an oscillator, which feeds your distribution amplifier, not the inherent noise of the amplifier. It needs a different measurement technique to characterize the inherent noise of an amplifier, and there are different numbers to come out of that. At this point I am not able to argue about the -135 dBc/Hz @ 1 Hz for your OCXO, as you do not specify, what model and brand that is. Regards Bernd Neubig DK1AG __________________ AXTAL GmbH & Co.KG www.axtal.com _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.