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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.

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