 |
Decompose the incident field into TE & TM components of the zeroth
order Floquet modes (denoted by coefficients A001 & A002 respectively) |
|
Expand the transmitted & reflected fields as an infinite series of
Floquet modes with unknown coefficients |
|
Match the boundary conditions at the filter, assuming an infinitely
thin, perfectly conducting filter |
|
Substitute the integral representation of the reflection and
transmission coefficients into the resulting equation to form an integral equation |
|
Provide faster convergence by expanding the tangential field at the
filter into orthonormal functions that span the aperture space (the set of wave guide
modes) |
|
Use the orthonormality of the wave guide functions to convert the
integral equation into a matrix equation (Galerkin's moment method) |
|
Decide where to truncate the infinite matrix equation |
|
Solve numerically by matrix inversion to determine unknown transmission
and reflection coefficients |
|
Use the coefficients to find the aperture field distribution |
