Theory of the scattering of electromagnetic waves by a regular grid of parallel cylindrical wires with circular cross section

Abstract

A method is described for calculating the scattering of electromagnetic waves by a grid of equally spaced parallel cylindrical wires with finite conductivity. It is an adaptation of the 'Green function' method used in solid-state band-structure theory, as described by Ham and Segall (see Phys. Rev., vol.124, p.1786, 1961). The theory is restricted to the case when the direction of incidence is in a plane perpendicular to the wires. Curves are shown for the transmission at normal incidence in situations typical of infrared spectroscopy.