Characteristics of electric field and radiation pattern on different locations of the human body for in-body wireless communication
Characteristics of electric field and radiation pattern on different locations of the human body for in-body wireless communication
复制标题
体内无线通信人体不同位置的电场和辐射方向图特征
DOI：
10.1109/tap.2013.2272672
复制
发表时间：
2013
影响因子：
5.7
通讯作者：
and Koichi Ito
中科院分区：
文献类型：
--
作者：
Ho-Yu Lin;Masaharu Takahashi;Kazuyuki Saito;and Koichi Ito
体内无线通信系统因其可以取代生物遥测监测的连接性而受到越来越多的关注。然而，人体是一个非常复杂的环境（有损、色散和不均匀），并且会影响近场的电磁（EM）波。此外，整个人体几何形状会影响远场的辐射方向图。该通信展示了当偶极天线（用作植入式天线）嵌入人体锁骨、上臂、下臂和手附近时，2.45 GHz 的近场和远场电磁波的行为。采用时域有限差分法模拟了其对电场和辐射性能的影响。通过引入三层模型，确认了天线性能。此外，测量结果和模拟结果相互吻合。从这项研究中获得的信息可用于评估体内无线通信的链路预算。
An in-body wireless communication system has attracted increasing attention because it can replace the connectivity of biological telemetry monitoring. However, the human body is a very complex environment (lossy, dispersive, and inhomogeneous) and affects the electromagnetic (EM) wave in the near field. Moreover, the entire human geometry affects the radiation pattern in the far field. This communication presents the behavior of the EM wave in the near and far fields at 2.45 GHz when a dipole antenna (used as an implantable antenna) is embedded in the vicinity of the clavicle, upper arm, lower arm, and hand of a human body. The effect on the electric field and radiation performance is simulated by the finite-difference time-domain method. By introducing a three-layered phantom, the antenna performance is confirmed. Moreover, the measured and simulated results are in good agreement with each other. The information derived from this study can be used in the evaluation of the link budget of in-body wireless communication.