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The Smith chart is one of the most useful data visualization tools for high frequency circuit applications. It contains two sets of circles to plot the parameters of transmission lines.

WPF smith chart control

Rendering type

Both the impendence and admittance of transmission lines can be visualized with a Smith chart.


The Smith chart control supports a horizontal axis and radial axis. The horizontal axis is used for plotting the resistance values of transmission lines and the radial axis is used for plotting reactance values of transmission lines.


Any number of line series can be plotted for representing data.

Data labels

Data points can be easily annotated with labels to help improve the readability of data. The data labels are smartly arranged to avoid intersection when there are large amounts of data.


Legends provide additional information that is helpful in identifying individual series in a Smith chart. They can be docked to the left, right, top, or bottom positions around the plot area. By clicking a legend item, we can toggle series visibility.

WPF Smith chart with legend support


Tooltip displays a pop-up with additional information when the mouse is hovered over a data point.

WPF Smith chart with tooltip support


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