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| | Personal Area Networks: Near-field intrabody communication |
 | | In Figure 2 the PAN transmitter is modeled as an oscillator, and the receiver is modeled as a differential amplifier. |
 | | A communication network is judged primarily by channel capacity, with a theoretical limit defined by the Hartley-Shannon law [5] C = Blog(1 + S/N), where C is channel capacity in bits/second, B is bandwidth, S is signal, and N is noise. |
 | | When the woman and man depicted in the figure are in close proximity, particularly when they shake hands, an electric circuit is completed, allowing picoamp signals to pass from the transmitter through her body, to his body, to the receiver by his foot, and back through the earth ground. |
| www.research.ibm.com /journal/sj/353/sectione/zimmerman.html (3131 words) |
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