Mutual coupling between broadside printed dipoles embedded in stratified anisotropic dielectrics

The mutual coupling between two broadside printed dipoles in stratified anisotropic dielectrics is evaluated using newly derived spectral domain immittance functions. It is shown that an increase in the permittivity in the layer below the dipoles in the direction of the optical axis can significantly increase the mutual coupling while an increase in the permittivity in the direction orthogonal to the optical axis in the layer above the dipoles could be used to reduce the mutual coupling. The isotropic cases are compared to published literature and commercial software for validation and good agreement is shown.