Specify a complex load

[iwbnwif]

Is it possible to directly specify a complex source / load when performing a Qucsator-RF S-Parameter simulation?

If I try to specify a Power Source with impedance 50 + j30 then it generates a syntax error. I can specify a parameter Zl = 50 + j30 and assign this as the Power Source Z parameter, but only the real part is used in the simulation.

Of course, I can use capacitors / inductors in series or parallel with the source / load however I wondered if it is possible to specify the complex impedance directly.

[ra3xdh]

The power sources in Ngspice, Xyce, and Qucsator don't support a complex impedance. You have to find some workaround.

[iwbnwif]

Thank you. It seems that one relatively simple way for complex loads is to create a s1p file, e.g.:

# MHz Z RI R 50
144.43000 1 0.5

I would imagine that a source can similarly be modelled, either as a non-generative s1p; or a s2p with port 1 = 50 ohms at all frequencies if a generator is required.