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A High-Precision Integration Scheme for the Spectral-Element Time-Domain Method in Electromagnetic Simulation

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3 Author(s)
Jiefu Chen ; Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA ; Joon-Ho Lee ; Qing Huo Liu

A high-precision integration (HPI) scheme combined with the spectral-element time-domain (SETD) method is presented to solve the time-dependent Maxwell's equations. Spatial discretization by spectral elements will lead to block diagonal mass matrices, thus greatly alleviating the computational burden of inverting the mass matrices. A high-precision time integration method based on the matrix exponential is then employed to solve the discretized SETD system. Numerical examples demonstrate that this algorithm is unconditionally stable and very accurate.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:57 ,  Issue: 10 )