Naslov
Characterization and comparison of envelope detectors for wake-up sensor interfaces at audio frequencies

Autori
Gazivoda, Marko ; Oletic, Dinko ; Bilas, Vedran

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings IEEE I2MTC 2020 / Rapuano, Sergio ; Vasic, Darko ; Van Moer, Wendy - Piscataway (NJ) : Institute of Electrical and Electronics Engineers (IEEE), 2020, 1-6

ISBN
978-1-7281-4460-3

Skup
2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2020)

Mjesto i datum
Dubrovnik, Hrvatska, 25.05.2020. - 28.05.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
passive envelope detector, switched inductor envelope detector, weak-signal envelope detection

Sažetak
Ultra-low-power analog hardware interfaces are becoming often used for continuous monitoring of weak, rarely and randomly occurring (spurious) acoustic events. Detection often requires interfaces for analog-domain time-frequency decomposition. These interfaces most often have a generic structure incorporating the same processing blocks, such as amplification, filtering, rectification, quantization and rudimentary classification. A critical processing block of the wake-up sensor interface is the envelope detector. In this paper we select four envelope detector topologies and show simulation and measurement results of their key parameters for their application in wake-up sensor interfaces. The selected envelope detectors must have short transient times (< 100 ms), used to rectify weak input signals (under 10 mV) in the lower audio frequency range and have a low power consumption to make them applicable in wake-up sensor interfaces.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA