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This work presents an ultra-low power event driven wake-up receiver (WuRx) fabricated in a RF CMOS 130 nm process. The receiver consists of an off-chip lumped element matching network, an envelope detector, a decision circuit capable of detecting sub-mV baseband signal voltages and a clock source consuming 1.3 nW. This receiver has demonstrated a sensitivity of −72 dBm while consuming a total of 8...
This paper compares the impact of power supply variation on the performance of register-based and latch-based digital circuits. A 32-tap, 16-bit FIR filter is fabricated using both flip-flops and latches in a 130nm CMOS process. Measurements show 25–37% improvement in energy-efficiency for the latch-based implementation operating below 0.6V subject to 44–120mV, 1 kHz peak-peak VDD ripple. This paper...
A 1 trillion node internet of things (IoT) will require sensing platforms that support numerous applications using power harvesting to avoid the cost and scalability challenge of battery replacement in such large numbers. Previous SoCs achieve good integration and even energy harvesting [1][2][3], but they limit supported applications, need higher end-to-end harvesting efficiency, and require duty-cycling...
Traffic lights, which may also be known as stoplights, traffic lamps, traffic signals, stop-and-go lights robots or semaphore are signaling devices positioned at road intersections, pedestrian crossings and other locations to control competing flows of traffic[1]. Traffic lights assign the right of way to road users by the use of lights in standard colors. Traffic light controller establishes a set...
All wireless systems require the precise timing synchronization to satisfy the higher quality of service (QoS) requirements. Particularly, timing synchronization between base stations (BSs) during soft handover is required to increase the diversity gain of soft handover. Current timing synchronization protocol (e.g. IEEE1588, GPS) updates the synchronization at fixed time duration and it causes the...
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