Tool · Analog, RF & Mixed-Signal
Smith chart
A polar plot of the complex reflection coefficient overlaid with constant resistance and reactance circles, letting impedance transformations be read graphically.
It turns matching network design into moving along known arcs.
- Type
- Tool
- Domain
- Analog, RF & Mixed-Signal, RF characterisation
Notes
Devised by Phillip Smith at Bell Labs in 1939 and still the default display on every vector network analyser.
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Part of the Analog, RF & Mixed-Signal glossary, with every term in the topic and the lifecycles, tools and standards that use them.
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