Hi,

I want to measure nonlinear building blocks like varactor dividers, parametric amplifiers and converters, power amps that show unwanted instabilities at some power and load impedances, regenerative mixers and circuits of that sort.

What I understand from the PNA-X literature is that PNA-X uses a polyharmonic distortion approach where all harmonics frequencies are linear combinations of the DUT input frequencies of the form n*f1 +/- m*f2 +/- ...

What I would need is the possibility to handle fractional frequencies of the input, in the form f*p/q where p and q are positive integers. Can you get a PNA-X to do that for you ?

Best regards

Wolfgang

In general, using option 089, we can set the sources to generate any signal, and then set receivers to measure at any number of other frequencies (one or more others) for each point of the source setting. So yes, as long as the frequency is known you can measure it. If you want mag AND phase, it's a bit more tricky, and all frequencies must be a multiple of some common factor.