复杂环境中手机电磁辐射的比吸收率计算

doi:10.19665/j.issn1001-2400.2019.02.028

Abstract

Abstract:

Aiming at the problem how to accurately and efficiently calculate the specific absorption ratio (SAR) from the mobile phone electromagnetic radiations in complex environment, the finite element domain decomposition method (DDM) and its solution method for aperiodic targets are studied. By combining the finite element DDM with the parallel computing technology, an efficient method for analyzing the local SAR of the human body under mobile phone radiations is given. By calculating the complex hierarchical head model and comparing with commercial software, the correctness and computational efficiency of this method are verified. Finally, this method is applied to calculate the local SAR of the human head in vehicle environment, and the number of FEM meshes exceeds 10million, which shows the ability of the method.

Key words: finite element method, domain decomposition method, specific absorption ratio, mobile phone radiation

CLC Number:

TN820

ZUO Sheng,BAI Yang,ZHANG Yu,ZHAO Xunwang,LIN Zhongchao. Calculations of the specific absorption ratio from mobile phone electromagnetic radiations in complex environment[J].Journal of Xidian University, 2019, 46(2): 170-176.

Figures/Tables 8

References 17

[1]	IEEE. IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz-300 GHz-amendment 1: Specifies Ceiling Limits for Induced and Contact Current, Clarifies Distinctions between Localized Exposure and Spatial Peak Power Density: IEEE Std C951a-2010 Amend[S]. Piscataway: IEEE, 2010.
[2]	陈威立 . 移动电话比吸收率能力验证技术研究[D]. 北京: 华北电力大学, 2017.
[3]	张玉, 赵勋旺, 陈岩 , 等. 计算电磁学中的超大规模并行矩量法[M]. 西安: 西安电子科技大学出版社, 2016.
[4]	TOGASHI T, NAGAOKA T, KIKUCHI S , et al. FDTD Calculations of Specific Absorption Rate in Fetus Caused by Electromagnetic Waves from Mobile Radio Terminal Using Pregnant Woman Model[J]. IEEE Transactions on Microwave Theory and Techniques, 2008,56(2):554-559. doi: 10.1109/TMTT.2007.914625
[5]	姜雪松, 江树刚, 张玉 , 等. 国产众核处理器百万核时域有限差分并行计算[J]. 西安电子科技大学学报, 2017,44(6):65-69. doi: 10.3969/j.issn.1001-2400.2017.06.012
	JIANG Xuesong, JIANG Shugang, ZHANG Yu , et al. Parallel FDTD Computation of Million Cores with the Domestically-made Many-core Supercomputer[J]. Journal of Xidian University, 2017,44(6):65-69. doi: 10.3969/j.issn.1001-2400.2017.06.012
[6]	LAAKSO I, UUSITUPA T, ILVONEN S . Comparison of SAR Calculation Algorithms for the Finite-difference Time-domain Method[J]. Physics in Medicine and Biology, 2010,55(15):N421-N431. doi: 10.1088/0031-9155/55/15/N03 pmid: 20647604
[7]	NIU K, HUANG Z, LI M , et al. Optimization of the Artificially Anisotropic Parameters in WCS-FDTD Method for Reducing Numerical Dispersion[J]. IEEE Transactions on Antennas and Propagation, 2017,65(12):7389-7394. doi: 10.1109/TAP.2017.2758844
[8]	HUANHUAN Z, ZHONGCHAO L, SHA W , et al. Electromagnetic-thermal Analysis of Human Head Exposed to Cell Phones with the Consideration of Radiative Cooling[J]. IEEE Antennas and Wireless Propagation Letters, 2018,17(9):1584-1587. doi: 10.1109/LAWP.2018.2856365
[9]	CHUANG H R . Human Operator Coupling Effects on Radiation Characteristics of a Portable Communication Dipole Antenna[J]. IEEE Transactions on Antennas and Propagation, 1994,42(4):556-560. doi: 10.1109/8.286229
[10]	MAKAROV S, NOETSCHER G, YANAMADALA J , et al. Virtual Humans Models for Electromagnetic Studies and Their Applications[J]. IEEE Reviews in Biomedical Engineering, 2017,10:95-121. doi: 10.1109/RBME.2017.2722420 pmid: 28682265
[11]	MOHAMMED B, JIN J, ABBOSH A , et al. Evaluation of Children Exposure to Electromagnetic Fields of Mobile Phones Using Age-specific Head Models with Age-dependent Dielectric Properties[J]. IEEE Access, 2017,5:27345-27353. doi: 10.1109/ACCESS.2017.2767074
[12]	WESSAPAN T, SRISAWATDHISUKUL S, RATTANADECHO P . Specific Absorption Rate and Temperature Distributions in Human Head Subjected to Mobile Phone Radiation at Different Frequencies[J]. International Journal of Heat and Mass Transfer, 2012,55(1-3):347-359. doi: 10.1016/j.ijheatmasstransfer.2011.09.027
[13]	KABURCUK F, ELSHERBENI A Z . Temperature Rise and SAR Distribution at Wide Range of Frequencies in a Human Head due to an Antenna Radiation[J]. Applied Computational Electromagnetics Society Journal, 2017,33(4):367-372.
[14]	ZHAO K, RAWAT V, LEE S C , et al. A Domain Decomposition Method with Nonconformal Meshes for Finite Periodic and Semi-periodic Structures[J]. IEEE Transactions on Antennas and Propagation, 2007,55(9):2559-2570. doi: 10.1109/TAP.2007.904107
[15]	LU J, CHEN Y, LI D , et al. An Embedded Domain Decomposition Method for Electromagnetic Modeling and Design[J], IEEE Transactions on Antennas and Propagation, 2019,67(1):309-323. doi: 10.1109/tap.2018.2874751
[16]	GARCíA-CASTILLO L E, SALAZAR-PALMA M . Second-order Nedelec Tetrahedral Element for Computational Electromagnetics[J]. International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, 2000,13(2/3):261-287. doi: 10.1002/(ISSN)1099-1204
[17]	SHAO Y, PENG Z, LIM K H , et al. Non-conformal Domain Decomposition Methods for Time-harmonic Maxwell Equations[J]. Proceedings: Mathematical, Physical, and Engineering Sciences, 2012,468(2145):2433-2460. doi: 10.1098/rspa.2012.0028 pmid: 22870061

计算方法	计算平台	计算资源	网格量	未知量	分区数目	迭代步数	内存使用峰值/GB	计算时间/s
商业软件HFSS			418760	2388323			44.9	2244
有限元整体解方法	计算平台Ⅰ	24 CPU核	552644	3545424			153.9	1227
有限元区域分解方法			552644	4028520	48	306	33.9	305

Calculations of the specific absorption ratio from mobile phone electromagnetic radiations in complex environment

RichHTML

PDF (PC)

Like

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 8

References 17

Related Articles 15

Metrics

Comments

Recommended 10

[1]	ZHAI Chang,LIN Zhongchao,ZHAO Xunwang,ZHANG Yu. Algorithm for half-space MLFMA domain decomposition utilizing an octree [J]. Journal of Xidian University, 2021, 48(6): 144-150.
[2]	SU Qin, GU Zongjing, LIN Zhongchao, ZHAO Xunwang, ZHANG Yu. Analysis of scattering characteristics of the one-thousand-wavelength object using the parallel IE-NDDM [J]. Journal of Xidian University, 2018, 45(6): 7-13.
[3]	WANG Nan;MA Juan;ZHANG Yulin. Random computational homogenization for three-dimensional linear elasticity [J]. Journal of Xidian University, 2016, 43(4): 92-99.
[4]	FAN Yesen;LI Tuanjie;MA Xiaofei;LI Zhengjun. Form-finding method of equal tension cable networks for space mesh antennas [J]. J4, 2015, 42(1): 49-55.
[5]	MING Zhengfeng;WEN Tao;LEI Zhenya;WEN Rui;WANG Hao. Design and analysis of large displacement hybrid system [J]. J4, 2012, 39(3): 1-6+13.
[6]	LIU Haiqiang;GUO Zhen;WANG Shiyu;LIN Lin;JIN Wenlong;LI Bingbin;CAI Defang. Influence of thermal contact conductance on the side-face of the crystal rod on wavefront distortion in the solid-state laser [J]. J4, 2012, 39(2): 153-158.
[7]	DANG Xiaojie;YUAN Haobo;WANG Nan;LIANG Changhong. New method for removing the hidden face in the MOM-PO hybrid method [J]. J4, 2012, 39(1): 38-41.
[8]	LIN Lin;GUO Zhen;WANG Shiyu;LI Haiqiang;CAI Defang;LI Bingbin. Analysis of thermal axial symmetry in the LD side-pumped laser [J]. J4, 2011, 38(2): 141-145+186.
[9]	Lü Zhi-qing;AN Xiang. Auxiliary excitation algorithm of the domain decomposition method for 3-D large-scale electromagnetic problems [J]. J4, 2009, 36(5): 851-856.
[10]	WANG Xiao-bing;CHEN Jian-jun;LIANG Zhen-tao;CHEN Yong-qin;XIE Yong-qiang. Randomicity analysis of the piezothermoelasticity intelligent thin plate by appling the numerical method [J]. J4, 2008, 35(4): 592-599.
[11]	CHEN Xiao-qiang1;LI Ming1;REN En-en1;LU Mai2. Study of transmission characters of two kinds of new double-ridge waveguide [J]. J4, 2007, 34(3): 495-499.
[12]	LI Jin-ping;CHEN Jian-jun;LIU Hai-feng;XU Jian;HUANG Xiao-bian. Analysis of stochastic temperature field by the Neumann expansions [J]. J4, 2007, 34(3): 453-457.
[13]	AN Xiang1;Lü Zhi-qing2;LIANG Chang-hong1. The auxiliary excitation source domain decomposition method and its application in electromagnetics scattering problems [J]. J4, 2007, 34(2): 175-180.
[14]	WU Nan;FENG Da-zheng;LIU Bao-quan. A region growing phase unwrapping algorithm based on local frequency estimation for interferometric SAR [J]. J4, 2007, 34(1): 87-91.
[15]	AN Xiang(1);Lü Zhi-qing(2);LIANG Chang-hong(1). Study of the infinite element-domain decomposition method in electromagnetic scattering of cylinders [J]. J4, 2006, 33(3): 425-429.