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Smith chart

info

Charts are available with Avalonia Pro.

Smith charts plot normalized resistance and reactance on a specialized circular grid used in radio frequency (RF), antenna, and impedance-matching work.

When to use​

  • RF analysis: Visualize impedance trajectories across frequency.
  • Matching networks: Inspect how a design moves toward or away from the center match point.
  • Transmission-line work: Review complex reflection behavior on a familiar grid.

Code example​

XAML​

<charts:SmithChart Title="Impedance trace"
                             Height="320"
                             ItemsSource="{Binding ImpedanceData}"
                             ResistancePath="Resistance"
                             ReactancePath="Reactance" />

Data model (C#)​

public record ImpedancePoint(double Resistance, double Reactance);

public ObservableCollection<ImpedancePoint> ImpedanceData { get; } = new()
{
    new(0.5, -0.3),
    new(0.8, 0.1),
    new(1.2, 0.4)
};

Common properties​

PropertyDescriptionDefault
ItemsSourceCollection of impedance points.null
ResistancePathPath to the normalized resistance value.null
ReactancePathPath to the normalized reactance value.null
StrokeThicknessThickness of the plotted trace.2.0

See also​

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