A method for reconstruction of the parameters of the Debye or Lorentzian dispersive media is proposed. In this method, S-parameters of a simple parallel-plate fixture filled with the dispersive medium are measured and modeled using the transmission line equations, provided a single TEM mode propagating in this parallel-plate waveguide. The genetic algorithm is used for searching the parameters of the dispersive medium by means of minimizing the discrepancy between the measured and modeled S-parameters. The results are verified using the full-wave FDTD modeling technique.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility (2003: Aug. 18-22, Boston, MA)


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

Debye Dispersive Media; Lorentzian Dispersive Media; S-Parameters; TEM Mode Propagation; Dispersive Media; Electromagnetic Wave Propagation; Finite Difference Time Domain; Finite Difference Time-Domain Analysis; Full-Wave FDTD Modeling; Genetic Algorithms; Parallel-Plate Fixture; Parallel-Plate Waveguide; Parameter Reconstruction; Parameter Searching; Transmission Line Equations; Transmission Lines; Debye And Lorentzian Dispersion Laws; FDTD Modeling; Genetic Algorithm; Telegrapher's Equations

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2003 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 2003