標題: An Optically-Powered 432 MHz Wireless Tag for Batteryless Internet-of-Things Applications
作者: Cheng, Hao-Chung
Chen, Yen-Ting
Chen, Po-Hung
Liao, Yu-Te
電子工程學系及電子研究所
電機工程學系
Department of Electronics Engineering and Institute of Electronics
Department of Electrical and Computer Engineering
關鍵字: Batteryless;charge pump;photovoltaic energy harvesting
公開日期: 1-Sep-2019
摘要: This paper presents an optically-powered wireless tag, integrating a charge pump (CP) and a low-power RF transmitter for batteryless Internet-of-Things (IoT) applications. The proposed charge pump with hysteresis regulation mechanism (HRM) powers the transmitter circuit using indoor light energy. The charge pump enables the transmitter whenever the output capacitor stores sufficient energy and guarantees a short period signal transmission. The proposed low-power transmitter contains the subharmonically injection-locked PLL and the capacitive coupling technique to achieve a large frequency multiplication ratio. The proposed batteryless wireless chip is fabricated in 0.18-mu m CMOS process. The measurement results demonstrate that the proposed charge pump provides a 1.1 to 1.3 V hysteresis regulated voltage under indoor light illumination larger than 300 lux. The charge pump achieves 84.1% peak efficiency and the communication distance of 3 meters is demonstrated while only consuming 248 mu W.
URI: http://dx.doi.org/10.1109/TCSI.2019.2927397
http://hdl.handle.net/11536/152866
ISSN: 1549-8328
DOI: 10.1109/TCSI.2019.2927397
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Volume: 66
Issue: 9
起始頁: 3288
結束頁: 3295
Appears in Collections:Articles