Effective 2-Debye-Pole FDTD Model of Electromagnetic Interaction Between Whole Human Body and UWB Radiation

• Published in: IEEE microwave and wireless components letters Vol. 17; no. 7; pp. 483 - 485
• Main Authors: Wuren, T., Takai, T., Fujii, M., Sakagami, I.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.07.2007; Institute of Electrical and Electronics Engineers
• Subjects: Applied sciences; Binary phase shift keying; Biological system modeling; Dispersions; Electromagnetic analysis; Electromagnetic compatibility; Electromagnetic interactions; Electromagnetic modeling; Electromagnetic radiation; Exact sciences and technology; Finite difference methods; Finite difference time domain (FDTD); Finite difference time domain method; Fittings; Frequency; Frequency ranges; Human body; human tissue model; Humans; Information, signal and communications theory; Least squares methods; Spreads; Telecommunications and information theory; Time domain analysis; ultra wide band (UWB); Ultra wideband technology; Human body; Modulated signal; Finite difference time-domain analysis; Electromagnetic compatibility; human tissue model; ultra wide band (UWB); Numerical method; Binary phase shift keying; MHz range; Electromagnetic interaction; Ultra wide band; Signal spectrum; Energy dissipation; Least squares method; Frequency spectrum; Spread spectrum; Whole body; Cole Cole model; Energy absorption; Permittivity; Finite difference time domain (FDTD)
• ISSN: 1531-1309; 1558-1764
• DOI: 10.1109/LMWC.2007.899295

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.