First, thanks for the replies from all.
More info on the LO chain: 1) 5MHz Wenzel OCXO <--Custom Osc for me. 2) MSA-1105 buffer MMIC and lumped LPF 3) 5MHz to 10MHz 1N5711 diode based doubler 4) MSA-1105 buffer and lumped LPF 5) 10MHz to 20MHz 1N5711 diode based doubler 6) 20MHz BPF 7) 20MHz drives sampling detector inside surplus Frequency West PLL block to lock 1320MHz cavity oscillator. 8) 1320MHz drives Frequency West SRD multiplier to 6.6GHz. 9) 6.6GHz to 39.6GHz Milliwave diode multiplier/amp/filter 10) 39.6GHz to 79.2GHz in varactor doubler 11) 79.2GHz to 158.4GHz in varactor doubler 12) 158.4GHz into x4 sub-harmonic mixer So my question was based on best close-in phase noise in LO chain going from 5MHz to 20MHz. My MSA-1105 MMICs may be running near or just into compression and I may need to adjust the design gain stack-up. -Brian _______________________________________________ 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.
