Hello Cecil,

I would like to return back to the topic with a brainteaser also. You
posted links to some document written by Walt. The first reference
(QEX, May-June 2001, http://www.w2du.com/QEXMayJun01.pdf ) shows
some measuring results using load pulling in table one.

I have a source 100Vp, 4 MHz, sinusoidal, in series with a capacitance
of 796 pF (that is a capacitive reactance of 50 Ohms). Would you be so
kind to determine the output impedance of this source using load
pulling (for example using 51.2 Ohms and 44.6 Ohms). Of course I have
no problems if you (or somebody else) use a simulator to save time.

If you (or somebody else) feel uncomfortable with a zero ohm voltage
source, you may add 1 Ohms in series with the capacitor.

Did you (or somebody else) expect the calculated result based on load
pulling?

With kind regards,


Wim
PA3DJS
www.tetech.nl