ABSTRACT
Modeling of pulsed ElectroMagnetic (EM) radiation is of interest for the Timed Domain performance analysis of microstrip antennas as well as for the evaluation of unintentional ElectroMagnetic Interference due to noise signals propagating on Printed-Circuit Boards. In the case of a planar structure, one may take advantage of its low thickness and make use of a simplified radiation model. In that model, the electric-current surface density on conducting plates is neglected against the magnetic-current surface density along the lateral sides of a planar circuit. The pulsed EM radiation from a planar circuit has been analysed in the context of Time-Domain Contour-Integral Method. It has been shown that the electric-field far-field amplitude can be expressed using the slant-stack transformation of the equivalent magnetic-current surface density distributed along circuit's rim. A straightforward numerical solution of the integral representation has been proposed and numerically validated for the case of an irregularly-shaped planar circuit.
