A 0.4 V, 6.4 nW, −75 dBm Sensitivity Fully Differential Wake-Up Receiver for WSNs Applications

This paper presents a fully differential wake-up receiver (WuRX) with ultra-low power and high sensitivity. Implementing the fully differential framework achieves differential signal processing without an off-chip balun, which achieves noise suppression and sensitivity improvement. The low voltage b...

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Veröffentlicht in:IEEE transactions on circuits and systems. I, Regular papers Jg. 69; H. 7; S. 2794 - 2804
Hauptverfasser: Liao, Xufeng, Xie, Suzhen, Xu, Jiaxi, Liu, Lianxi
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York IEEE 01.07.2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Schlagworte:
Baseband
Circuits
Differential
Differential amplifiers
envelope detector
LF noise
Low voltage
Noise reduction
Noise sensitivity
offset cancellation technology
Power consumption
Power demand
Radio frequency
Receivers
Sensitivity
Signal processing
time-domain
ultra-low-power wake-up receiver
Voltage
ISSN:1549-8328, 1558-0806
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Zusammenfassung:This paper presents a fully differential wake-up receiver (WuRX) with ultra-low power and high sensitivity. Implementing the fully differential framework achieves differential signal processing without an off-chip balun, which achieves noise suppression and sensitivity improvement. The low voltage baseband signal processing (LVBSP) is proposed to cut down the power consumption, which is achieved by the low-voltage fast-response differential amplifier (LFDA) and the time-domain signal processing circuit. Moreover, the periodic offset cancellation technique (POCT) in the baseband circuit is proposed to alleviate the offset and low-frequency noise impacts. This WuRX is implemented in the TSMC 65-nm CMOS process occupying an active area of 0.18 mm 2 . When operating at 434 MHz, the proposed WuRX has a −75-dBm sensitivity at 250 bps while consuming 6.4 nW from 0.4 V supply voltage.
Bibliographie:ObjectType-Article-1
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content type line 14
ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2022.3163801