| 摘要 |
A transceiver (4) includes a transmitting/receiving electrode (11) that is come into contact with or capacitively coupled to a human body (2), serving as a transmission medium, a receiving mechanism (12) connected to the transmitting/receiving electrode (11), and a transmitting mechanism (13) connected to the transmitting/receiving electrode (11). Upon signal transmission, the receiving mechanism (12) is open-circuited as viewed from the transmitting/receiving electrode (11) to allow the impedance on the transmitting mechanism (13) side as viewed from the transmitting/receiving electrode (11) to match that of the human body (2). Upon signal reception, the transmitting mechanism (13) is open-circuited as viewed from the transmitting/receiving electrode (11) to allow the impedance on the receiving mechanism (12) side as viewed from the transmitting/receiving electrode (11) to match that of the human body (2).
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