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An FSK Inductive-Coupling Transceiver Using 60mV 0.64fJ/bit 0.0016mm2 Load-Modulated Transmitter and LC-Oscillator-Based Receiver in 65nm CMOS for Energy-Budget-Unbalanced Application
Kenya HAYASHI Shigeki ARATA Ge XU Shunya MURAKAMI Cong Dang BUI Atsuki KOBAYASHI Kiichi NIITSU
IEICE TRANSACTIONS on Electronics
Publication Date: 2019/07/01
Online ISSN: 1745-1353
Type of Manuscript: BRIEF PAPER
FSK, IoT, inductive-coupling, load modulation, low power,
Full Text: FreePDF(1MB)
This work presents an FSK inductive-coupling transceiver using a load-modulated transmitter and LC-oscillator-based receiver for energy-budget-unbalanced applications. By introducing the time-domain load modulated transmitter for FSK instead of the conventional current-driven scheme, energy reduction of the transmitter side is possible. For verifying the proposed scheme, a test chip was fabricated in 65nm CMOS, and two chips were stacked for verifying the inter-chip communication. The measurement results show 0.64fJ/bit transmitter power consumption while its input voltage is 60mV, and the communication distance is 150μm. The footprint of the transmitter is 0.0016mm2.