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초록보기

A self-powered gas sensor integrated circuit (IC) suitable for wireless sensor nodes is designed in 0.18 μm CMOS process. The novel idea of using the output of the photovoltaic (PV) cell covered by the gas-sensing film allows the proposed sensor system to have low power consumption and compact size. A dual-input shared-inductor boost converter is used to harvest energy efficiently from two PV cells instead of connecting these cells in parallel when the system is exposed to gases. This shows up to 11% improvement of conversion efficiency at 2% H₂ gas concentration. Maximum end-to-end efficiency of 88% is achieved at an output power of 3 mW, and the quiescent current is only 289 nA. An input-offset-storage autozeroing technique is used for opamp offset cancellation to achieve high-accuracy gas detection. A modified split-capacitor digital-to-analog converter (DAC) architecture is used for achieving a small area in the signal-processing block.

권호기사

권호기사 목록 테이블로 기사명, 저자명, 페이지, 원문, 기사목차 순으로 되어있습니다.
기사명 저자명 페이지 원문 목차
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(An) adaptive power management integrated circuit for sensor readout systems Sang Il Lee, Kyeong Ho Eom, Hyung Min Lee p. [1-6]

Design of an ASK RF transceiver for ETCs with hybrid ASK modulator and ultra low power wake-up receiver Yeon Jun Kim, Jae Hyung Jung, Tae Seob Oh, Jae Bin Kim, Jong Wan Jo, Kang Yoon Lee p. [1-7]

Design of operator-based low power recording system for detecting contact signals from triboelectric touch sensor Joon Young Lim, Seo Kwon Joo, Gyu Ri Kim, Chae Eun Lee, Yu Ri Kim, Yoon Kyu Song p. [1-7]

High-throughput FPGA implementation of sliding DCT using look-ahead pipelining Geonu Kim, Yong-Ho Cho p. [1-5]