Journal
IEEE ACCESS
Volume 7, Issue -, Pages 3635-3643Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2018.2888584
Keywords
Finite-difference time-domain (FDTD) method; electromagnetic wave; human tissue; dispersion model; parallel processing; bioelectromagnetics; Doppler radar
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Funding
- Electronics and Telecommunications Research Institute (ETRI) Grant through the Korean Government (MSIT) [18ZH1600]
- Institute for Information and Communications Technology Promotion (IITP) Grant through the Korean Government (MSIT) [2016-0-00130]
- Institute for Information & Communication Technology Planning & Evaluation (IITP), Republic of Korea [18ZH1600] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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The finite-difference time-domain (FDTD) modeling of a human voxel model at millimeter-wave (mmWave) frequencies is presented. It is very important to develop the proper geometrical and electrical modeling of a human voxel model suitable for accurate electromagnetic (EM) analysis. Although there are many human phantom models available, their voxel resolution is too poor to use for the FDTD study of EM wave interaction with human tissues. In this paper, we develop a proper human voxel model suitable for mmWave FDTD analysis using the voxel resolution enhancement technique and the image smoothing technique. The former can improve the resolution of the human voxel model and the latter can alleviate staircasing boundaries of the human voxel model. Quadratic complex rational function is employed for the electrical modeling of human tissues in the frequency range of 6-100 GHz. Massage passing interface-based parallel processing is also applied to dramatically speed up FDTD calculations. Numerical examples are used to illustrate the validity of the mmWave FDTD simulator developed here for bio electromagnetics studies.
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