A GSM-Based Clock-Harvesting Receiver With –87 dBm Sensitivity for Sensor Network Wake-Up

摘要

This paper presents a new type of wake-up receiver, called a clock-harvesting receiver, which extracts a 21 Hz clock embedded within the GSM standard for the wake-up of a wireless sensor network. The receiver was fabricated in 0.13 $mu$m CMOS and harvests a 21 Hz clock from the 1900–MHz GSM band. It was designed for heavily duty-cycled operation to reduce the energy required for synchronization of a network. In active mode, the receiver achieves a sensitivity of ${-}$87 dBm with 57 $mu$s of jitter while consuming 126 $mu$ W. In sleep mode, the power consumption is 81 pW. Experiments conducted in the lab verify the functionality of the receiver with a real local GSM cellular signal.