Matching Boundary for a Transient Solution

Matching boundaries allow you to model planes of periodicity where the H field on one surface exactly matches the H field on another by forcing the magnetic field at each location on one surface (the "dependent" boundary) to match the magnetic field at the corresponding location on the other surface (the "independent" boundary). Matching boundaries are used in periodic structures and decrease the resources used in the computational process.

For matching boundaries, you need to set up both an independent and a dependent boundary. Unlike symmetry boundaries on independent and dependent boundaries, the H field does not need to be either tangential or normal to these boundaries. However, the H field on the two boundaries must have the same magnitude and direction (or the same magnitude and opposite direction) at each timestep. The variation in time of the fields at corresponding locations is the same on matching (independent and dependent) boundaries.