Materials
The next step is to assign material properties to the model. The air that fills most of the volume is available as a built-in material. The lossy ferrite has user-defined properties assigned to it later, which will illustrate how external material data can be directly entered into the electromagnetic waves model. The walls of the waveguide sections are modeled as perfect electric conductors and do not require a material configuration.
1
In the Home toolbar click Add Material .
2
In the Materials tree under Built-In, right-click Air and choose Add to Component 1 .
3
Click Add Material again to close the Add Material window.