Influence of lossy finite width image planes on PCB radiation

The radiation from a printed circuit board (PCB) is one of the critical problems regarding the design and functioning of VLSI electronic devices. This work deals with the influence of two finite width, finite thickness, not perfectly conductive image planes on the radiation from a trace placed between them. The effects of the surface currents on both sides of each plane are taken into account. The radiated emission of this structure has been calculated by solving a set of Electric Field Integral Equations by the Method of Moments. The current distributions on the image planes as functions of various parameters are analyzed to have a guidance to an optimal design. The radiation patterns in different configurations of the image planes are also considered. The diffusion of the electromagnetic field through the finite thickness of the boards is modelled and its influence discussed.