Stretchable Twisted-Pair Transmission Lines for Microwave Frequency Wearable Electronics
Stretchable Twisted-Pair Transmission Lines for Microwave Frequency Wearable Electronics
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DOI：
10.1002/adfm.201600856
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发表时间：
2016-07-12
影响因子：
19
通讯作者：
Ma, Zhenqiang
中科院分区：
文献类型：
--
作者：
Jung, Yei Hwan;Lee, Juhwan;Ma, Zhenqiang
基于与弹性材料组合的蛇形线的可拉伸电互连件用于各种类别的可穿戴电子设备中。然而，这种互连主要用于直流或低频信号，并且与能够实现无线通信的微波电子器件不兼容。本文介绍了一种能够传输微波信号的可拉伸传输线的设计和制作过程。可拉伸传输线具有集成到薄膜蛇形微结构中的双绞线设计，以最小化电磁干扰，使得线的性能受附近环境的影响最小，从而允许其用于薄膜生物电子学，例如表皮电子系统。详细的分析，模拟和实验结果表明，可拉伸传输线具有可忽略的性能变化时，拉伸和可操作的皮肤上通过抑制辐射发射实现的双绞线几何形状。最后，利用该双绞线结构制作了可伸缩微波低通滤波器和带阻滤波器，验证了该传输线作为可伸缩无源器件的可行性。这些概念形成了用于设计可伸缩微波组件、电路和子系统的基本元素，这些组件、电路和子系统执行重要的射频功能，可以应用于无线电发射器和接收器的许多类型的可伸缩生物电子器件。
Stretchable electrical interconnects based on serpentines combined with elastic materials are utilized in various classes of wearable electronics. However, such interconnects are primarily for direct current or low-frequency signals and incompatible with microwave electronics that enable wireless communication. In this paper, design and fabrication procedures are described for stretchable transmission line capable of delivering microwave signals. The stretchable transmission line has twisted-pair design integrated into thin-film serpentine microstructure to minimize electromagnetic interference, such that the line's performance is minimally affected by the environment in close proximity, allowing its use in thin-film bioelectronics, such as the epidermal electronic system. Detailed analysis, simulations, and experimental results show that the stretchable transmission line has negligible changes in performance when stretched and is operable on skin through suppressed radiated emission achieved with the twisted-pair geometry. Furthermore, stretchable microwave low-pass filter and band-stop filter are demonstrated using the twisted-pair structure to show the feasibility of the transmission lines as stretchable passive components. These concepts form the basic elements used in the design of stretchable microwave components, circuits, and subsystems performing important radio frequency functionalities, which can apply to many types of stretchable bioelectronics for radio transmitters and receivers.