Transient Characteristics of Wearable Antennas and Radio Propagation Channels for Ultrawideband Body-Centric Wireless Communications
Transient Characteristics of Wearable Antennas and Radio Propagation Channels for Ultrawideband Body-Centric Wireless Communications
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DOI：
10.1109/tap.2009.2014588
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发表时间：
2009-04-01
影响因子：
5.7
通讯作者：
Hao, Yang
中科院分区：
文献类型：
--
作者：
Alomainy, Akram;Sani, Andrea;Hao, Yang
本文介绍了用于以身体为中心的无线通信的超宽带（UWB）体戴天线和体上无线电传播信道的瞬态特性。提出了一种新型小型化cpw馈电锥形缝隙天线，并将其用于体域网（BAN）和个人域网（PAN）场景下UWB无线信道的瞬态测量。与传统的超宽带cpw馈电天线不同，该天线采用两个发散的锥形槽来提供平滑稳定的阻抗匹配。采用保真度分析方法对体磨损天线的时域行为进行了评价，发现传统共面波导馈电天线和锥形缝隙天线的平均保真度分别为88%和86%。然而，锥形槽天线显示出显著的尺寸减小，因此适合于以身体为中心的无线通信。
This paper presents transient characterization of ultrawideband (UWB) body-worn antennas and on-body radio propagation channels for body-centric wireless communications. A novel miniaturized CPW-fed tapered slot antenna is proposed and used for transient measurements of UWB radio channels for body area network (BAN) and personal area network (PAN) scenarios. Unlike conventional UWB CPW-fed antennas, the proposed antenna employs two diverging tapered slots to provide smooth and stable impedance matching. Fidelity analysis is applied to evaluate the time-domain bbehaviorof body-worn antennas and it is found that average fidelity obtained is 88% and 86% for the conventional coplanar waveguide fed antenna and the tapered slot antenna, respectively. However, the tapered slot antenna shows a significant size reduction and hence is suited for body-centric wireless communications.