[G0HZU_JMR]

Yes, why not take one apart and copy it?

You could use 0402 and 0603 parts for the RLC parts and a decent SOT-23 device like the BFR93 or something from NEC.

Looking at the bias point of 11.5mA and the 99dBuV spec for the 3 tone DIN test I'd expect the P1dB to be fairly weedy.

I'd guess +3dBm in a 75R system but I have never played with one.

What RF output power level do they run at in the Mi2022?

Note that to describe it as a replacement for the OM345 you would have to prove it had similar S parameter behaviour to the original and also that it meets the DIN test for IMD.

I knocked up a quick simulation and found I needed to include some SMD inductors to get the flatness across 40-860MHz but I managed to get close to the -60dBc DIN spec for the 3 tone test in a 75R simulator and also I managed to get fairly similar smith chart plots. The P1dB when tested in a 50R simulator was close to +3dBm but this was all based on my guesses for the component values as my datasheet for the OM345 only gives a schematic but no component values.