Higher-Order Convolution PML (CPML) for FDTD Electromagnetic Modelling

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

A new simple formulation for incorporating a higher-order perfectly matched layer (PML) stretching function within a convolution PML (CPML) implementation in finite-difference time-domain (FDTD) electromagnetic modelling codes is developed. Obtaining in closed form the corresponding time domain impulse response of the inverse of a number of higher-order PML stretching functions enables the efficient and simple implementation of such higher-order PMLs using recursive convolution, in the same way as it was introduced initially for the complex frequency shifted (CFS) PML. This new higher-order CPML exhibits excellent performance that is comparable to the performance shown by other higher-order PML formu-lations whilst it retains the advantage of a relatively simpler implementation.
Original languageEnglish
Pages (from-to)6226-6231
JournalIEEE Transactions on Antennas and Propagation
Issue number8
Early online date9 Apr 2020
Publication statusPublished - Aug 2020

Keywords / Materials (for Non-textual outputs)

  • finite-difference time-domain (FDTD)
  • convolution
  • CPML
  • Higher-order


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