[time-nuts] HP10514B Mixer Terminations

[Jim Lux]

On 9/9/12 9:37 PM, lists at lazygranch.com wrote:
> What am I missing here? Vce = Vbe, so the diode connected transistor isn't saturated.
>


I think it's where the diode is fully conducting, and into the linear 
part of the V/I curve, not in the square law part any more.

In normal use the LO port is driven hard enough that the mixer is 
(hopefully) acting as a switch (and RF port is <-10dB relative to the LO)