Time-Domain Analysis of Thin-Wire Structures Based on the Cagniard-DeHoop Method of Moments
Martin Štumpf (Brno University of Technology)
Ioan E. Lager (TU Delft - Electrical Engineering Education)
Giulio Antonini (University of L'Aquila)
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Abstract
Thin-wire structures in the presence or absence of a ground plane are analyzed numerically in the time domain (TD) with the aid of the Cagniard-DeHoop method of moments (CdH-MoM). It is demonstrated that the TD solution of such problems can be cast into the form of discrete time-convolution equations. Under the assumption of piecewise linear space-time axial current distribution, the elements of the TD impedance array are derived analytically in terms of elementary functions. Their approximations applying to multi-conductor transmission lines are discussed. Illustrative numerical examples validating the TD solution are presented.