Fully Passive RF Wake-Up Receiver Including a Small Loop Antenna with -30.7 dBm Sensitivity at 26 kbps Bitrate
Darshan Shetty,
Christoph Steffan,
Wolfgang Bösch
et al.
Abstract:This brief presents a fully passive RF wake-up receiver (WuRX) fabricated in a 130 nm CMOS process with a matched small loop antenna. The WuRX consists of a high-sensitivity RF energy harvester that supplies the circuitry necessary for passive WuRX functionality. The circuit consists of an on-chip voltage reference, current reference, power-on reset, low-dropout regulator, relaxation oscillator, envelope detector, comparator, and a digital processor. The WuRX supports an input bitrate of 26 kbps and has a user… Show more
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