Accurate FDTD dispersive modeling for concrete materials

Haejun Chung, Jeahoon Cho, Sang Gyu Ha, Saehoon Ju, Kyung Young Jung

Research output: Contribution to journalArticle

14 Scopus citations


This work presents an accurate finite-difference time-domain (FDTD) dispersive modeling of concrete materials with different water/cement ratios in 50 MHz to 1 GHz. A quadratic complex rational function (QCRF) is employed for dispersive modeling of the relative permittivity of concrete materials. To improve the curve fitting of the QCRF model, the Newton iterative method is applied to determine a weighting factor. Numerical examples validate the accuracy of the proposed dispersive FDTD modeling.

Original languageEnglish
Pages (from-to)915-918
Number of pages4
JournalETRI Journal
Issue number5
StatePublished - 2013 Oct 1


  • Concrete materials
  • Dispersive media
  • FDTD
  • Newton iterative method

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