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Requires a selection of at least one Y column of values (or a range from at least one column). If the Y column(s) has an associated X column, then the X column supplies the X values. Otherwise, the worksheet's default X values are used.
Select or click the Smith Chart button on the 2D Graphs toolbar.
The Smith Chart graph is created from the SMITHCHT.OTP template (installed to the Origin program folder).
To customize the Smith Chart, edit the Plot Details and Axes dialog boxes. Additionally, click the 
button to open the Smith Chart tool.
Smith Chart Tool Controls ( see figure)
The Normalization Group
Re-normalize the current Smith Chart by entering or selecting a factor from the Factor combo box. Click Normalize to perform the normalization.
The Current Active Data Set Group
If you have plotted multiple data sets into the Smith Chart, the Convert Data to Mag / Angle and the Reinterpret Data as Mag / Angle buttons act on the active data plot. You can change the active data plot in the Smith Chart from the menu or by selecting the data plot icon in the legend. To update the Smith Chart tool with this change, click the Update button on the tool. (Note: R = real part, X = imaginary part)
The Convert Data to Mag / Angle Button
Click this button to convert the active data plot into the Mag / Angle format and put the data in the source worksheet.
The Reinterpret Data as Mag / Angle Button
Click this button to treat the active data plot as the Mag / Angle format, and convert the data into R / X format. The data is then re-plotted.
The Reverse R Axis Button
Click this button to reverse the real part axis of the Smith Chart.
The Constant SWR Circle Group
Given the point position specified, select the circle point density and the line color. Click the Add button to add a constant SWR circle through the given point.