Energy-recycling integrated 6.78-Mbps data 6.3-mW power telemetry over a single 13.56-MHz inductive link

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We present a power/data telemetry IC with a new data modulation scheme and simultaneous power transfer through a single inductive link. Data-driven synchronized single-cycle shorting of the secondary LC tank conserves reactive power while inducing an instantaneous voltage change at the primary side. Cyclic on-off keying time-encoded symbol mapping of the shorting cycle allows transmission of two data bits per four carrier cycles with simultaneous power transfer during non-shorting cycles. All timing control signals for rectification and data transmission are generated from a low-power clock recovery comparator and 22-phase 2× PLL. The 1-mm2 65-nm CMOS IC delivers up to 6.3-mW power and transmits 6.78-Mbps data with a BER of less than 5.9×10-7 over a single 1-cm 13.56-MHz inductive link.
Publisher
IEEE
Issue Date
2014-06
Language
English
Citation

28th IEEE Symposium on VLSI Circuits, VLSIC 2014

DOI
10.1109/vlsic.2014.6858381
URI
http://hdl.handle.net/10203/280349
Appears in Collection
BiS-Conference Papers(학술회의논문)
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