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A two-level plane wave time-domain algorithm for fast analysis of EMC/EMI problems

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4 Author(s)
Aygun, K. ; Dept. of Electr. & Comput. Eng., Illinois Univ. at Urbana-Champaign, Urbana, IL, USA ; Shanker, B. ; Ergin, A.A. ; Michielssen, E.

A fast time-domain integral equation (TE)-based scheme for analyzing transient electromagnetic compatibility and interference (EMC/EMI) problems involving printed circuit boards and cables/connectors that reside in shielding enclosures, is presented. The proposed algorithm hybridizes a classical marching-on-in-time (MOT) solver for analyzing radiation from perfect electrically conducting (PEC) surface/wire geometries with the previously introduced two-level plane wave time-domain (PWTD) algorithm. The accuracy and efficacy of the resulting MOT-PWTD algorithm are validated via analysis of the radiation characteristics of a number of structures including a loaded motherboard that resides in a chassis. For a problem with Ns spatial and NT temporal unknowns, the computational complexity of the two-level MOT-PWTD algorithm scales as O(NTNS1.5 log NS) as opposed to O(NTNS2) for a classical MOT scheme

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:44 ,  Issue: 1 )