A 2m-Range 711uW Body Channel Communication Transceiver Featuring Dynamically-Sampling Bias-Free Interface Front End

Conference paper (2022)

Authors

Guanjie Gu Zhejiang University
Changgui Yang Zhejiang University
S. Du Electronic Instrumentation - EEMCS
Yong Chen University of Macau
Bo Zhao Zhejiang University
Zhuhao Li Zhejiang University
Xiangdong Feng Zhejiang University
Ziyi Chang Zhejiang University
Ting-Hsun Wang Zhejiang University
Yunshan Zhang Zhejiang University
Yuxuan Luo Zhejiang University
Hong Zhang Zhejiang University
Ping Wang Zhejiang University
Research Group
Electronic Instrumentation (EEMCS) (TU Delft)
Copyright: © 2022 Guanjie Gu, Changgui Yang, Zhuhao Li, Xiangdong Feng, Ziyi Chang, Ting-Hsun Wang, Yunshan Zhang, Yuxuan Luo, Hong Zhang, Ping Wang, S. Du, Yong Chen, Bo Zhao
DOI
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https://doi.org/10.1109/A-SSCC56115.2022.9980620
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Published Date

2022

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Electronic Instrumentation

Abstract

Body Channel Communication (BCC) offers a low-loss signal transmission medium for ultra-low-power wearable devices on human body [1]. However, the effective communication range on human body is limited to less than 1m in the state-of-the-art BCC transceivers [2], where the signal loss at the interface of body surface and BCC receiver remains to be one of the main bottlenecks. The limited communication range has blocked the popularization in many WBAN applications, such as signal transmission from to an intelligent insole to smart watch [3]. Relative to the high impedance of human body [4], the lower input impedance of BCC receiver induces significant signal loss. To reduce the interface loss, conventional interface front end (IFE) of BCC receivers was designed to be with a high input impedance [5], but the DC voltage bias decreased both the input impedance and signal gain of IFE.