That reference (below) is excellent, and clarifies everything! Thanks, Roger.
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Here is a link to an excellent paper by Olivier Pilloud HB9CEM which describes the relationship between the reflection coefficient Gamma (¦£). complex impedance (R+jX), Return Loss and VSWR. He also shows how the rectangular plot, polar plot and Smith chart are overlaid. He finishes up with an example and plots the results.
IHope it helps you - Roger
