Adding a Current Source

Apply a current source to a line port in a dielectric region solved with the finite element method (FEM) to realise an impressed current source.

Note: An intrinsic limitation of the impressed current source is that no radius is considered. The field is singular in the vicinity of the filament affecting the accuracy of the computed input impedance of the source.
  1. On the Source/Load tab, in the Sources on Ports group, click the  Current Source icon.
    Figure 1. The Create Current Source dialog.

  2. In the Port field, from the drop-down list, select a port.
  3. In the Magnitude (A) field, specify the magnitude of the current in Ampere.
  4. In the Phase (degrees) field, specify the phase of the current source.
  5. In the Reference impedance field, specify the impedance of the current source.
    Note: The reference impedance is used when calculating the input reflection coefficient and realised gain. If this field is empty, default value is taken as 50 Ohm.
  6. In the Label field, add a unique label for the current source.
  7. Click the Create button to create the current source and to close the dialog.