FDTD Dispersive Modeling of Human Tissues Based on Quadratic Complex Rational Function

Author

Sang-Gyu Ha ; Jeahoon Cho ; Jaehoon Choi ; Hyeongdong Kim ; Kyung-Young Jung

Author_Institution

Dept. of Electron. Comput. Eng., Hanyang Univ., Seoul, South Korea

Volume

61

Issue

2

fYear

2013

Firstpage

996

Lastpage

999

Abstract

We propose a dispersive finite-difference time domain (FDTD) suitable for the electromagnetic analysis of human tissues. The dispersion relation of biological tissues is characterized by a quadratic complex rational function (QCRF) that leads to an accurate FDTD algorithm in 400 MHz-3 GHz. QCRF coefficients are extracted by applying the complex-curve fitting technique, without initial guess. Numerical examples are used to illustrate the computational accuracy and stability of QCRF-based FDTD.

Keywords

biological effects of fields; biological tissues; curve fitting; dispersion relations; finite difference time-domain analysis; FDTD algorithm; FDTD dispersive modeling; QCRF coefficients; biological tissues; complex-curve fitting technique; dispersion relation; dispersive finite-difference time domain; electromagnetic analysis; frequency 400 MHz to 3 GHz; human tissues; quadratic complex rational function; Biological system modeling; Dispersion; Finite difference methods; Humans; Numerical stability; Stability analysis; Time domain analysis; Biological tissues; FDTD methods; curve fitting; dispersive media;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2012.2223448

Filename

6327605