Dipole radiation in the presence of a planar unidirectionally conducting screen

The reflecting and transmitting effects of the planar unidirectionally conducting screen on electromagnetic fields are discussed in this paper. The source of the fields is an elementary electric dipole located at front of the screen and oriented arbitrarily. With the help of spectral-domain approach and Weyl´s formulation, the electric field is first expressed in accurate and elementary functions. The obtained representations retain the following information for describing the electromagnetic properties of the screen. First, for dipole oriented along the wire elements, the reflected electric field is identified with the image fields and the transmitted field vanishes (the screen acts like a perfectly electrically conducting plane). Secondly, for dipole perpendicular to the wire elements, the reflected fields can be considered as arising from the images involving dipole and transmission-line source oriented in the conducting direction of screen, while the transmitted field is interpreted as the contribution of the image transmission-line source. In addition, the related surface waves which are also placed on some attentions in the paper.