A Miniature Low Power Bidirectional RF Communication System for Biotelemetry Applications

This paper present a miniature low power consumption RF communication system,which can be used in implantable or swallowable biotelemetry devices.This system consists of a miniature RF transceiver inside the body and a data recorder outside the body.ISM band radio frequency(approx.433MHz) is used to achieve half duplex communication between the transceiver and the data recorder.Frequency Shift Keying(FSK) modulation scheme is adopted to ensure reliable and high-speed digital RF link.Animal tests have been carried out to prove the performance of the communication system.