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Noise figure measurement with complex source impedance

Question asked by ik1yie on Feb 1, 2012
Latest reply on Feb 7, 2012 by daras
I use a N5245A PNA-X to make on-wafer noise figure measurements with option 29. The noise figure available from the instrument is measured (calculated?) at GS=0 (corresponding to source impedance of 50ohm). Is it possible to make the NF measurement at one of the input tuner state that do not correspond to 50ohm? During calibration, the tuner is set at (up to) 7 positions away from the center of the Smith chart, so the NFx=NF(GSx) data (with x=1,...,7) should be in the instrument.... Can NFx and GSx be pulled out of the PNA-X somehow?

Thanks!
Luciano  

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