Viewing the Input Impedance

View the input impedance (real part and imaginary part) of the voltage source on a Cartesian graph.

A Cartesian graph with the input reflection coefficient already exists. Duplicate the graph and modify the trace to display the input impedance.

Make a copy of the existing graph.

  1. On the Cartesian context tab, on the Display tab, in the Duplicate group, click the  Duplicate view icon.

View the real part of the impedance.

  1. On the result palette, in the traces panel, select VoltageSource1.
    1. On the quantity panel, select Impedance from the list.
    2. Click Real.


Duplicate the VoltageSource1 trace.

  1. Duplicate a trace using one of the following workflows:
    • On the Cartesian context tab, on the Trace tab, in the Manage group, click the  Duplicate trace icon.
    • On the result palette, a right-click context menu is available on the trace. From the drop-down list, select Duplicate trace.


    • Press Ctrl+K to use the keyboard shortcut.
    A duplicate trace with the label VoltageSource1_1 is created.

View the imaginary part of the impedance.

  1. On the result palette in the traces panel, select VoltageSource1_1.
    1. On the quantity panel, click Imaginary.

Change the trace text to distinguish between the two traces on the graph.

  1. Select the VoltageSource1 trace.
    1. On the Cartesian context tab, on the Display tab, in the Legend group, click the  Trace text icon.
    2. On the Legend entry settings dialog, clear the Auto check box.
    3. In the Legend text field, enter Real.
    4. Click OK to update the trace text and to close the dialog.


  2. Repeat Step 5 for VoltageSource1_1, but change the trace text to Imaginary.



Save the POSTFEKO session to ensure the view is maintained for viewing later.

  1. On the application menu, select Save project.