IMAGE THEORY FOR THE UNIDIRECTIONALLY CONDUCTING SCREEN

Image theory is developed for electromagnetic sources in front of a pl anar unidirectionally conducting screen, made of ideally conducting pa rallel wires with thickness and interspace dimensions much smaller tha n the wavelength, Replacing the screen by the image sources gives the correct reflected and transmitted fields on the respective sides of th e screen, The problem is solved through a decomposition of the origina l source in two parts, giving rise to fields TE and TM with respect to the direction of the wires. For the TE and TM source components, the images can be constructed from previous knowledge. For an electric dip ole source, the images are seen to involve dipole and transmission-lin e sources.