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Measurement System for Propagation Characteristics of Intra-Body Communication

The propagation characteristics of body channel are the fundamental issue of intra-body communication system design. The measurements of the body channel cover the frequency range from 300kHz to 5MHz and the channel length of 30cm, 90cm and 150cm. Individual difference and movement states are introduced as measurement parameters. A data processing method is created to offset the systematic error, which means calibration-free is realized. By analyzing the measurement results, the authors determine a suitable frequency range for intra-body communication.