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该论文提出了一种用于体耦合通信（BCC）的宽带相关收发器，功耗仅为2.75mW。通过电容耦合电极实现与人体非接触通信，解决了传统射频系统在人体附近干扰大、衰落严重的问题，实现了低功耗高速率无线体域网通信。
Electronic devices in contact or in close proximity to the human body can use its conductive properties to establish body coupled communication (BCC) between each other. This human centric communication paradigm can be used for wireless body-area networks to reduce the impact of interference on/from RF systems, to avoid the fading effect that the body has on radio systems and to enable power efficient, high data-rate wireless links. BCC, without skin contact, can be realized via two electrode RX/TX devices capacitively coupled to the human body (Fig. 11.5.1); TX generates a variable electric field while RX senses the variable potential of the body with respect to the environment. The signal transfer along the body has high-pass characteristics with a corner frequency determined by the input impedance of the RX device. A signal attenuation of less than 70dB has been measured between devices placed at various positions on the human body (Fig. 11.5.1, [1,2]).
Alberto Fazzi, Sotir Ouzounov, John van den Homberg
Philips Research, Eindhoven, Netherlands