| 摘要 |
Stable receiving is realized by a simpler receiver constitution. When a hand of a human body is made to face a panel section (201), the electric field around the human body is coupled to a sensor electrode (2122) of a coil sensor (212) through a receiving electrode (211) of the panel section (201), and an AC current is generated in the sensor electrode (2122). The AC current induces a magnetic flux corresponding to the intensity of the electric filed around the human body in the center hole of a coil (2121). In response to the variation of the magnetic flux, a current flows through the coil (2121) and converted into a voltage signal by a current detecting circuit (2124) of the coil sensor (212). The voltage signal is sent to a demodulator (22) as a received signal. As a result, a received signal following up the electric field around the human body, that is, a transmission signal applied to the human body by a transmitter (1) is obtained. |
