Simultaneous 6-Gb/s data and 10-mW power transmission using nested clover coils for noncontact memory card

Andrzej Radecki, Yuxiang Yuan, Noriyuki Miura, Iori Aikawa, Yasuhiro Take, Hiroki Ishikuro, Tadahiro Kuroda

    Research output: Contribution to journalArticle

    4 Citations (Scopus)

    Abstract

    An inductive power and data transmission link for a noncontact memory card interface is reported. Nested clover coils improve signal-to-interference ratio and enable simultaneous power and data transmission. This capability is then used in the design of a closed-loop feedback system for improving power transfer efficiency. Interference cancellation mechanism is analyzed with both 3-D EM simulations and a newly developed compact model of coupled inductors. Performance of the proposed solutions was confirmed experimentally using a scaled-down stacked-chip prototype fabricated in a 65-nm CMOS process. Maximum data transmission rate is 6 Gb/s and the total power transfer efficiency is 5.2%-10.2% over a load resistance range of 0.1-2 k$\Omega$.

    Original languageEnglish
    Article number6247481
    Pages (from-to)2484-2495
    Number of pages12
    JournalIEEE Journal of Solid-State Circuits
    Volume47
    Issue number10
    DOIs
    Publication statusPublished - 2012 Aug 1

    Keywords

    • Analytical models
    • data communication
    • electromagnetic modeling
    • inductive power transmission
    • nonvolatile memory
    • power system stability

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering

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