摘要
利用时域有限差分方法,以人体腹部为例,数值模拟了不同频段下时谐场源从体内到体外的传播情况,对通讯频率的选择和电磁波在腹腔内组织的衰减进行了分析。形成的传播图像合理地再现了传播过程。这些图像可以帮助人们正确理解由于所选择频段的不同,以及腹部各种组织不同的介电特性,导致电磁波在不同类型组织中的衰减情况有很大差异。在此基础上,引用精确的腹部模型计算放置在人体表面接收天线的电场强度,此结果为胶囊内窥镜体外接收天线位置的研究提供了理论依据。
This paper presented the propagation characteristics of time-harmonic field in abdominal tissue of thehuman body under different frequency,by using the finite-difference time-domain method.This simulation resultsexhibited the wave propagation process.These results can help us explain the phenomenon that the attenuation of theelectromagnetic wave in human tissues is different due to dielectric property in various human tissues and differentfrequency that we choose.In addition,the accurate abdominal model was used to calculate the electric field intensityof the antenna placed on the surface of human body.This result provides a theoretical basis for the study of thelocation of the receiving antenna.
作者
杨梦溪
YANG Mengxi(School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210003, China)
出处
《莆田学院学报》
2017年第2期50-54,共5页
Journal of putian University
基金
江苏省教育厅自然科学研究面上项目(14KJB510025)
关键词
电磁波
人体腹部组织
衰减
时域有限差分法
数值模拟
无线胶囊内窥镜
electromagnetic
abdominal tissue of the human body
attenuation
finite-difference time-domain
numerical modeling
wireless capsule endoscope
