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Open AccessArticle
A Temperature-Robust Envelope Detector Receiving OOK-Modulated Signals for Low-Power Applications
by
Alessia Maria Elgani
Alessia Maria Elgani 1,2,*,
Matteo D’Addato
Matteo D’Addato 1,2,
Luca Perilli
Luca Perilli 2,3,
Eleonora Franchi Scarselli
Eleonora Franchi Scarselli 2,3,
Antonio Gnudi
Antonio Gnudi 2,3,
Roberto Canegallo
Roberto Canegallo 1 and
Giulio Ricotti
Giulio Ricotti 1
1
STMicroelectronics, 20864 Agrate Brianza e Cornaredo, Italy
2
Advanced Research Center on Electronic Systems “Ercole De Castro” (ARCES), University of Bologna, 40123 Bologna, Italy
3
Department of Electrical, Electronic, and Information Engineering “Guglielmo Marconi” (DEI), University of Bologna, 40123 Bologna, Italy
*
Author to whom correspondence should be addressed.
Sensors 2024, 24(19), 6369; https://doi.org/10.3390/s24196369 (registering DOI)
Submission received: 26 July 2024
/
Revised: 17 September 2024
/
Accepted: 26 September 2024
/
Published: 30 September 2024
Abstract
This paper presents a passive Envelope Detector (ED) to be used for reception of OOK-modulated signals, such as in Wake-Up Receivers employed within Wireless Sensor Networks, widely used in the IoT. The main goal is implementing a temperature compensation mechanism in order to keep the passive ED input resistance roughly constant over temperature, making it a constant load for the preceding matching network and ultimately keeping the overall receiving chain sensitivity constant over temperature. The proposed ED was designed using STMicroelectronics 90 nm CMOS technology to receive 1 kbps OOK-modulated packets with a 433 MHz carrier frequency and a 0.6 V supply. The use of a block featuring a Proportional-to-Absolute Temperature (PTAT) current yields a 5 dB reduction in sensitivity temperature variation across the −40 C to 120 C range. Moreover, two different implementations were compared, one targeting minimal mismatch and the other one targeting minimal area. The minimal area version appears to be better in terms of estimated overall chain sensitivity at all temperatures despite a higher sensitivity spread.
Share and Cite
MDPI and ACS Style
Elgani, A.M.; D’Addato, M.; Perilli, L.; Scarselli, E.F.; Gnudi, A.; Canegallo, R.; Ricotti, G.
A Temperature-Robust Envelope Detector Receiving OOK-Modulated Signals for Low-Power Applications. Sensors 2024, 24, 6369.
https://doi.org/10.3390/s24196369
AMA Style
Elgani AM, D’Addato M, Perilli L, Scarselli EF, Gnudi A, Canegallo R, Ricotti G.
A Temperature-Robust Envelope Detector Receiving OOK-Modulated Signals for Low-Power Applications. Sensors. 2024; 24(19):6369.
https://doi.org/10.3390/s24196369
Chicago/Turabian Style
Elgani, Alessia Maria, Matteo D’Addato, Luca Perilli, Eleonora Franchi Scarselli, Antonio Gnudi, Roberto Canegallo, and Giulio Ricotti.
2024. "A Temperature-Robust Envelope Detector Receiving OOK-Modulated Signals for Low-Power Applications" Sensors 24, no. 19: 6369.
https://doi.org/10.3390/s24196369
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