HFSS15: Defining Anisotropic Dielectric Loss Tangent Tensors

If the material property is anisotropic, its characteristics are defined by its anisotropy tensor. You must define three diagonals for electric loss tangent. Each diagonal represents a tensor of your model along an axis.

These tensors are relative to the coordinate system specified as the object’s Orientation property. By specifying different orientations, several objects can share the same anisotropic material but be oriented differently.

If electric loss tangent is anisotropic, do the following:

1. In the Dielectric Loss Tangent row in the View/Edit Material window, select Anisotropic from the Type pull-down list.

Three rows named T(1,1), T(2,2) and T(3,3) are added below the Dielectric Loss Tangent row.

2. Enter the ratio of the imaginary relative permittivity to the real relative permittivity in one direction in the Value box of the T(1,1) row.

3. Enter the ratio of the imaginary relative permittivity to the real relative permittivity in the second direction in the Value box of the T(2,2) row.

4. Enter the ratio of the imaginary relative permittivity to the real relative permittivity in the third orthogonal direction in the Value box of the T(3,3) row.

If the electric loss tangent is the same in all directions, use the same values for each direction.

These values can also be defined as variables.