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Time-domain free-space evaluations of urethane slabs with finite-difference time-domain computer simulations

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3 Author(s)
Johnk, R.T. ; Electromagn. Fields Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA ; Ondrejka, A.R. ; Holloway, C.L.

This paper describes the extraction of electrical material properties of lossy, carbon-doped urethane slabs using a free-space time-domain reflectivity measurement system developed by the National Institute of Standards and Technology. In order to validate the measurement results. The measurement system was simulated using the finite-difference time-domain method. Reflectivity measurement results and theoretical predictions as a function of carbon-doping, frequency, and angle of incidence are presented. Excellent agreement is obtained between measured and simulated results. Finally, complex permittivity results are presented for two urethane slabs with different carbon-doping levels, and the dispersion is a strong function of the amount of carbon

Published in:

Electromagnetic Compatibility, 1998. 1998 IEEE International Symposium on  (Volume:1 )

Date of Conference:

24-28 Aug 1998