Title :
Effective 2-Debye-Pole FDTD Model of Electromagnetic Interaction Between Whole Human Body and UWB Radiation
Author :
Wuren, Tuya ; Takai, Toshio ; Fujii, Masafumi ; Sakagami, Iwata
Author_Institution :
Toyama Univ., Toyama
fDate :
7/1/2007 12:00:00 AM
Abstract :
We have successfully developed a human body finite difference time domain model based on efficient two-pole Debye dispersion, and analyzed for the first time the electromagnetic interaction between a whole human body and ultra wide band radiation having a wide frequency spectrum. The two-pole Debye dispersion model is obtained for 50 individual human tissue properties from Gabriel´s Cole-Cole data by least squares fitting over a wide frequency range from 100 MHz to 6 GHz. For validation, the model is exposed to radiation of a spread spectrum signal modulated by typical binary phase shift keying. Local energy absorption in a human body has been compared between the two-pole Debye model and a conventional model with frequency-independent permittivity and conductivity.
Keywords :
biological effects of fields; dispersion (wave); finite difference time-domain analysis; Gabriel´s Cole-Cole data; UWB radiation; binary phase shift keying; electromagnetic interaction; frequency 100 MHz to 6 GHz; frequency-independent conductivity; frequency-independent permittivity; human body finite difference time domain model; human tissue; least squares fitting; local energy absorption; spread spectrum signal modulation; two-pole Debye dispersion; ultra wide band radiation; Biological system modeling; Electromagnetic analysis; Electromagnetic modeling; Electromagnetic radiation; Finite difference methods; Frequency; Humans; Least squares methods; Time domain analysis; Ultra wideband technology; Finite difference time domain (FDTD); human tissue model; ultra wide band (UWB);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.899295
