Magnetic Bias Source Coupling between Maxwell and HFSS

HFSS designs featuring ferrite materials can take advantage of non-uniform, static magnetic biasing fields to provide accurate design and simulation results. To achieve this goal it is possible to set up a coupling datalink between HFSS (target design) and a Maxwell 3D magnetostatic design (source).

The suggested sequence of steps to create the link between the HFSS and Maxwell 3D designs is as follows:

  1. Create and solve the Maxwell 3D design which contains the ferrite object and the corresponding non-uniform biasing fields.
  2. Create the HFSS design which can have entirely different geometry but which contains the ferrite object(s) present in the linked Maxwell 3D design.
    3. Note: Make sure that in the coupled designs (HFSS and Maxwell) the ferrite objects have the same position and orientation in the global coordinate system.
  3. In the HFSS design, assign appropriate ferrite material property to object.
  4. In the HFSS design, set the magnetic bias source (only one allowed per HFSS design):
    • Select the object(s) to be assign the non-uniform magnetic bias.
    • Click HFSS > Excitation > Assign > Magnetic Bias in the menu.

    The Magnetic Bias Source dialog box appears:

    1. Enter a Name for the source.
    2. Select the Non-Uniform radio button.
    3. Click the Setup Link button to specify the applicable Maxwell 3D project, design and solution for the link.
    4. Select OK when done.
  5. Select Finish to finalize the Magnetic Bias link setup.
Tip: It is possible to have the datalink create the Maxwell project automatically if it doesn’t exist. When selecting the “Setup Link” button above, entering nonexistent Maxwell project and design names will result in the creation of the needed Maxwell entities with the entire HFSS geometry included. All unneeded HFSS objects can be removed, and the rest of the Maxwell model can be built around the ferrite object(s).