A baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustness

This paper proposes a baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustness for use in the electronic toll collection system.A double-mode detection method,including amplitude detection and frequency detection,is proposed to reject interference and red...

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Bibliographic Details
Published inJournal of semiconductors Vol. 34; no. 8; pp. 144 - 149
Main Author 朱文锐 杨海钢 高同强 刘飞 程小燕 张丹丹
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Bandpass filters
Cancellation
Circuits
CMOS
Power supplies
Receivers
Robustness
Semiconductors
双模式
基带电路
接收器
敏感性
电子不停车收费系统
频率检测
高灵敏度
鲁棒性
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ISSN1674-4926
DOI10.1088/1674-4926/34/8/085011

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Summary:This paper proposes a baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustness for use in the electronic toll collection system.A double-mode detection method,including amplitude detection and frequency detection,is proposed to reject interference and reduce false wake-ups.An improved closed-loop band-pass filter and a DC offset cancellation technique are also newly introduced to enhance the sensitivity robustness.The circuit is fabricated in TSMC 0.18μm 3.3 V CMOS technology with an area of 0.12 mm2.Measurement results show that the sensitivity is -54.5 dBm with only a±0.95 dBm variation from the 1.8 to 3.3 V power supply,and that the temperature variation of the sensitivity is±1.4 dBm from -50 to 100℃. The current consumption is 1.4 to 1.7μA under a 1.8 to 3.3 V power supply.
Bibliography:This paper proposes a baseband circuit for wake-up receivers with double-mode detection and enhanced sensitivity robustness for use in the electronic toll collection system.A double-mode detection method,including amplitude detection and frequency detection,is proposed to reject interference and reduce false wake-ups.An improved closed-loop band-pass filter and a DC offset cancellation technique are also newly introduced to enhance the sensitivity robustness.The circuit is fabricated in TSMC 0.18μm 3.3 V CMOS technology with an area of 0.12 mm2.Measurement results show that the sensitivity is -54.5 dBm with only a±0.95 dBm variation from the 1.8 to 3.3 V power supply,and that the temperature variation of the sensitivity is±1.4 dBm from -50 to 100℃. The current consumption is 1.4 to 1.7μA under a 1.8 to 3.3 V power supply.
11-5781/TN
wake-up receiver double-mode detection DC offset cancellation
Zhu Wenrui 2, Yang Haigang, Gao Tongqiang, Liu Fei, Cheng Xiaoyan and Zhang Dandan 2 1 Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China 2University of Chinese Academy of Sciences, Beijing 100049, China
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-4926
DOI:10.1088/1674-4926/34/8/085011