標題: Wirelessly-Powered Printed Temperature Sensor with an Ultra-Low-Power and High-Sensitivity CMOS Readout IC
作者: Lu, Shao-Yung
Wu, I-Feng
Liao, Ying-Chih
Liao, Yu-Te
電機工程學系
Department of Electrical and Computer Engineering
關鍵字: CMOS;low power;low noise;temperature sensor
公開日期: 1-Jan-2019
摘要: This paper presents a wirelessly-powered high-sensitivity printed temperature sensor (TS). The proposed system consists of a -17dBm sensitivity RF-DC conversion circuit, a 2.2 mu W readout interface, and a printed NiO thermistor sensor. The 1 mm(2) printed NiO film has a good sensitivity index (B value) of 4000 K, but has high resistance (M Omega). The conventional readout system has difficulty detecting small resistance changes in the large thermal resistance range while only consuming a few microwatts, which is a need for enabling RF-power sensors remotely. A low-noise readout IC was designed to convert the resistance changes to digital codes. The proposed TS achieves a resolution of 0.04 degrees C/code in a temperature range of -20 degrees C to 90 degrees C, and measurement deviation within +/- 1.1%, while consuming only 2.2 nJ per conversion.
URI: http://hdl.handle.net/11536/154479
ISBN: 978-1-7281-1031-8
ISSN: 2472-467X
期刊: 2019 17TH IEEE INTERNATIONAL NEW CIRCUITS AND SYSTEMS CONFERENCE (NEWCAS)
起始頁: 0
結束頁: 0
Appears in Collections:Conferences Paper