ABSTRACT
The cavity model proved to be physically intuitive and computationally efficient for analyzing the pulsed ElectroMagnetic (EM) radiation characteristics of planar circuits. The confirmation of this expectation is basically a spin-0ff of this chapter, where straightforward expressions for the efficient calculation of the pulsedvoltage response to an external EM disturbance are constructed. The chapter utilizes the reciprocity theorem of the time-convolution type to express the pulsed voltage induced within a planar circuit via a straightforward one-dimensional integration of the testing field distribution along the circuit's rim. It is demonstrated that this approach is particularly efficient when combined with Time-Domain Contour-Integral Method (TD-CIM). While the former leads directly to the required space-time testing voltage distribution on the circuit's rim, the latter expresses the solution in terms of the causality-preserving TD ray-like constituents. In this way, the introduced methodology makes it possible to readily evaluate the TD radiated susceptibility of a planar circuit with very low computational efforts and yet reasonable accuracy.
