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Thanks! Well the more I play with the slotted line, the more I realize that I really need a way to move the test point around the board instead of the short. I think my method is measuring the end result of the network. As you move the 4 ohm termination back toward the PA, adding in more...

And finally.... I believe what is going wrong is that the order you build up the network, and the side you inject the signal, and the termination have to be all correct, or you get bad results. Duh. What seems to work in the simulator is to inject the signal at the PA side (opposite of what I...

READ FIRST: I may have figured it out! Ideally, I want to be able to plug my matching network into my slotted line and measure the 4 ohm impedance on my smith chart. If I use a smith tool such as "supersmith", I notice that if I set the load at 4 ohms and the source at 50 ohms, I get the...

I think you'll find this is an easy question if you are well versed in taking impedance measurements with a VNA (or even a slotted line). I believe my setup is flawed in some subtle way. I am able to plot changes on a smith chart as I add/remove components to my PCB using the technique I am...