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Galvanic Coupling Enabling Wireless Implant Communications

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7 Author(s)
Wegmueller, M.S. ; Integrated Syst. Lab. (IIS), ETH Zurich, Zurich, Switzerland ; Huclova, S. ; Froehlich, J. ; Oberle, M.
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Galvanic coupling has been shown to be the best method for low-power on-body data transmission. This approach has been extended toward wireless communication between implanted devices, building a real intrabody sensor network. To show the feasibility, a test system has been developed and implemented. The measurements are compared with the numerical simulations. The prototype offers four concurrent channels with a throughput of 4.8 kb/s. The main focus is the future implantability of such a miniaturized system for the medical long-term surveillance of patients. To achieve this goal, small circuit size, low power consumption, and electrical safety have to carefully be considered.

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Instrumentation and Measurement, IEEE Transactions on  (Volume:58 ,  Issue: 8 )