An Intra-Body-Power-Transfer System with a PLL-based Continuous Maximum Resonant Power Tracking Loop at TX and 1.8V DC Output Voltage at RX

Concurrent Body-Coupled Powering and Communication ICs With a Single Electrode

“…In contrast, by using the body as a forward transmission path and the parasitic capacitance as the return path, the capacitive body-coupled approach is shown to have an advantageous on-body path loss while being insusceptible to the body shadowing effect [3], [4], [5], [6], [7]. In spite of channel variations when coupling condition changes, by leveraging on the advantageous body path loss, the body-coupled communication (BCC) could enable lower energy per bit [8], [9], [10], [11], [12], [13], whereas the body-coupled powering (BCP) could enable higher power efficiency and wider body area power coverage [14], [15], [16], [17], [18], [19].…”