A 0.61 nJ/bit Scheduled Wake-Up Transmitter for Wireless Body Area Networks Application

This paper proposes a D8PSK quadrature scheduled wake-up transmitter for video/image transmission in typical wireless body area network medical applications. This design includes a scheduled sleep/wake-up controller and a charge pump based high-efficiency power management unit (PMU), and a quadrature up-conversion transmitter. The scheduled sleep/wakeup scheme and power management technique contribute to reduce the power consumption and extend the life-time of a battery-supplied wireless sensor. This design is fabricated in 65 nm CMOS technology, with a maximum output power of $\mathbf{- 0. 5}$ dBm and an average power consumption of 57.7 uW. The data rate for wake-up mode is 9 Mbps in D8PSK modulation scheme. The achieved EVM is $2.81 \% \mathrm{rms}$ with an energy efficiency of $0.61 \mathrm{~nJ} / \mathrm{bit}$.