Diffraction of plane electromagnetic wave from arrays of conducting rectangular cylinders

The boundary value problem of diffraction of parallel and perpendicular polarised waves from gratings of conducting rectangular cylinders is solved by a rigorous mode-expansion formulation and numerical solution. Comparison of computed results with the limited theoretical and experimental results available in the literature demonstrates the accuracy of the numerical method. Further numerical results inducate the usefulness of these gratings for a variety of applications, and provide additional information on the physical phenomena which cause the unexpected transmission and reflection properties. Such results are also of considerable value in serving as standards to which various approximate solutions may be compared for accuracy and interpretation.