This introductory video describes how complex impedance and admittance are represented on the Smith Chart, and how to convert between them. A VNA is used to illustrate the complex impedance representation on a live smith chart with variable resistive and reactive components.
Notes can be found here:
http://www.qsl.net/w2aew/youtube/Smith_Chart_Basics-Impedance_and_Admittance.pdf
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