Accurate and Efficient Finite-Difference Time-Domain Formulation of Dusty Plasma

Yong Jin Kim, Kyung Young Jung

Research output: Contribution to journalArticlepeer-review


The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic analysis of complex dispersive media. The shift-operator (SO)-FDTD or auxiliary differential equation (ADE)-FDTD formulation has been mainly employed for dusty plasma. Each FDTD formulation has its own pros and cons. SO-FDTD is accurate but not computationally efficient. ADE-FDTD needs less computational resources but its accuracy is poor. Here we propose an accurate and efficient FDTD formulation for dusty plasma, based on the bilinear transformation (BT). We perform a comprehensive study on the numerical permittivity and the computational efficiency for three FDTD formulations. Numerical examples are employed to illustrate that the proposed BT-FDTD outperforms the previously reported FDTD formulations for dusty plasma. In addition, based on the proposed BT-FDTD simulations, the effect of dust particles on EM wave propagation is investigated in the GHz band and THz band.

Original languageEnglish
JournalIEEE Transactions on Antennas and Propagation
StateAccepted/In press - 2021
Externally publishedYes


  • Current
  • Dispersive media
  • Dusty plasmas
  • Finite difference methods
  • Mathematical model
  • Permittivity
  • Plasmas
  • Time-domain analysis
  • dusty plasma
  • finite-differential time-domain (FDTD) method
  • numerical accuracy


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