Fundamental development of the hybrid communication system for wearable devices using ultrasonic waves and electric field

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This study is about the information transmission system for wearable devices which have computing and communication function and can be equipped human body. The system uses the body as a transmission path and two kinds of energies, ultrasonic waves and electric field. Those energies are output from one piezo oscillator and utilized hybridly for the communication.The condition of the communication using both and each energies is figured out. The communication circuits are developed and the communication quality is evaluated. As a result, the availability of the hybrid communication system is proved.