Hyeong-Seok Kim

TL;DR: In this article, a new energy harvesting technology using stray electric field of an electric power line is presented, where energy can be harvested and stored in the storage capacitor that is connected to a cylindrical aluminum foil wrapped around a commercial insulated 220 V power line.

TL;DR: This paper presents a fully-integrated IR-UWB radio, designed to operate within the limits of mm-scale micro-battery for cubic-mm sensor nodes, which includes an RF front-end, battery current limiter, baseband modem with I2C interface, and temperature-compensated relaxation oscillator for frequency generation without a crystal.

TL;DR: Through the adaptive mesh generation, this paper has shown that one can obtain not only higher resolution but also more efficient grid distribution with a smaller number of grids.

TL;DR: This paper, split into Parts I and II, reviews recent innovations in circuit design that have accelerated the miniaturization of sensor nodes and introduces analog circuit techniques and sensor interfaces for miniaturized sensor nodes.

TL;DR: This paper includes a die-stacked sensor platform composed of an ARM cortex M0 processor, energy harvester, power management unit, solar cell, optical receiver, sensor layer, and RF transmitter that exploits the discussed design techniques for ultra-low power operation.