Body area networks at radio frequencies: Creeping waves and antenna analysis
Body area networks at radio frequencies: Creeping waves and antenna analysis
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DOI：
10.1016/j.crhy.2015.10.005
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发表时间：
2015-11-01
影响因子：
1.4
通讯作者：
Craeye, Christophe
中科院分区：
文献类型：
--
作者：
Ali, Khaleda;Keshmiri, Farshad;Craeye, Christophe
体上通信技术的发展需要更好地了解天线辐射和波沿身体沿着传播，在近场和远场。因此，绿色的功能与可穿透的圆柱体进行了简要的审查，考虑的频率，在该机构是不是比波长大得多，并给予特别注意的近场。提出了一种基于电流片的统一方法和加速技术。这是一个FDTD软件的帮助下，它也允许非正则截面的分析进行验证。本文研究了由平行和垂直于物体的源发射的爬行波的性质，特别是从它们的相速度的观点出发，并提出了一个非常简单的拟合模型。它还解释了如何可以利用绿色函数来分析天线非常有效地与一个积分方程的方法的帮助。(C)2015年，科学院。由Elsevier Masson SAS出版。All rights reserved.
On-body communication technology development requires a better knowledge of antenna radiation and wave propagation along the body, in both near and far fields. Therefore, Green's functions associated with penetrable cylinders are briefly reviewed, considering frequencies at which the body is not much larger than the wavelength and with a particular attention given to the near fields. A unified approach based on current sheets is provided and an acceleration technique is proposed. This is validated with the help of an FDTD software, which also allows the analysis of non-canonical cross-sections. The properties of creeping waves launched by sources parallel and perpendicular to the body are studied, in particular from the point of view of their phase velocity, and a very simple fitting model is proposed. It is also explained how the Green function can be exploited to analyze antennas very efficiently with the help of an integral-equation approach. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.