[G0HZU_JMR]

Earlier this year I used Agilent Genesys to try to reverse engineer the OM345 and OM360 circuits wrt finding out the values of the biasing resistors. this was in response to the earlier thread on this subject.

Of course the best way to do this would be to simply measure the resistances of a real module. But I don't have one to take apart.

Once I had some reasonable values for the resistors I also did an EM analysis of a typical PCB layout of the schematic using Sonnet 3D EM and getting a decent flat performance above 700MHz isn't easy to achieve with a typical SOT23 transistor due to the various parasitics.

But for most of the OM345 locations in the 2022 this doesn't matter because they only operate at lower frequencies. It's the ones used on the upper ranges that will need to deliver decent performance across 500-1000MHz.