Xiao Wu

TL;DR: Based on the key observation that energy source efficiency is higher than charge pump efficiency, this work presents a discontinuous harvesting technique that decouples the two efficiencies for a better tradeoff and achieves >40% end-to-end efficiency.

TL;DR: This paper demonstrates a complete wireless sensor node for accurate cellular temperature measurement that includes a fully programmable Cortex-M0+ processor, custom SRAM, optical energy harvesting, 2-way communication, and a subthreshold temperature sensor.

TL;DR: This work adopts motion-detection triggering of full-array capture where MD is performed on a heavily subsampled frame to enable continuous low-power operation and addresses the full-frame capture energy itself needs to be addressed.

TL;DR: A low-power image sensor with a motion-based triggering feature for the Internet of Things (IoT) applications and a column-parallel capacitor array-assisted charge-injection SAR ADC that achieves 10b operation with readout noise of 226 is proposed.

TL;DR: The challenges and solutions to 3D-stacked mm-scale design are surveyed, highlighting low-power circuit issues ranging from low- power SRAM and miniature neural network accelerators to radio communication protocols and analog interfaces.