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[EMC]Fast and Rigorous Analysis of EMC/EMI Phenomena

WORKHARD

UID ：19957

注册：2008-10-23
登录：2011-09-22
发帖：435
等级：积极交流五级

0楼发表于: 2009-03-04 23:28:38

Abstract—A fast and comprehensive time-domain method for
analyzing electromagnetic compatibility (EMC) and electromagnetic
interference (EMI) phenomena on complex structures that
involve electrically large platforms (e.g., vehicle shells) along with
cable-interconnected antennas, shielding enclosures, and printed
circuit boards is proposed. To efficiently simulate field interactions
with such structures, three different solvers are hybridized:
1) a time-domain integral-equation (TDIE)-based field solver that
computes fields on the exterior structure comprising platforms, antennas,
enclosures, boards, and cable shields (external fields); 2) a
modified nodal-analysis (MNA)-based circuit solver that computes
currents and voltages on lumped circuits approximating cable connectors/
loads; and 3) a TDIE-based transmission line solver that
computes transmission line voltages and currents at cable terminations
(guided fields). These three solvers are rigorously interfaced
at the cable connectors/loads and along the cable shields;
the resulting coupled system of equations is solved simultaneously
at each time step. Computation of the external and guided fields,
which constitutes the computational bottleneck of this approach,
is accelerated using fast Fourier transform-based algorithms. Further
acceleration is achieved by parallelizing the computation of
external fields. The resulting hybrid solver permits the analysis
of electrically large and geometrically intricate structures loaded
with coaxial cables. The accuracy, efficiency, and versatility of the
proposed solver are demonstrated by analyzing several EMC/EMI
problems including interference between a log-periodic monopole
array trailing an aircraft’s wing and a monopole antenna mounted
on ..

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