A Clock-Harvesting Receiver Using 3G CDMA Signals in the 1900-MHz Band

Jonathan K. Brown, David D. Wentzloff
2012 IEEE Transactions on Circuits and Systems - II - Express Briefs  
A clock-harvesting receiver is presented, which extracts a 1.2-kHz clock embedded within the third-generation codedivision multiple-access standard for the wake-up of a wireless sensor network. The energy-detection-based receiver was fabricated in 0.13-μm CMOS and designed for low-power heavily duty-cycled operation. In active mode, the receiver has a measured sensitivity of −73 dBm while consuming only 298 μW. The harvested-clock output has 7 μs of root-mean-square jitter at the sensitivity
more » ... el, which improves with higher received power. In sleep mode, the receiver consumes only 44 pW with a start-up time of 80 μs. Index Terms-Analog integrated circuits, code-division multiple access (CDMA), clock-harvesting receiver (CRX), synchronization, wake-up receiver (WRX), wireless sensor networks (WSNs).
doi:10.1109/tcsii.2012.2218397 fatcat:2odb4s2sajf7vclg2s4m4ofd3u