Ultra-Low Power Electronics for Smart Healthcare Applications
Prof. Xiongchuan Huang
Energy-efficient operation is crucial for smart healthcare and Internet of Things (IoT) applications. As these technologies become increasingly pervasive, power consumption remains a critical bot-tleneck, particularly in battery-powered and energy-harvesting systems. Among various circuit blocks, communication circuitry is often the most power-hungry due to the inherent challenges of the wireless medium, including noise, interference, and free-space path loss.
Addressing these challenges requires a holistic approach. While circuit design plays a fundamental role, achieving orders-of-magnitude improvements demands synergistic innovations in system ar-chitectures, signaling techniques, and algorithmic optimizations. This talk introduces a range of strategies aimed at minimizing the power consumption of wireless sensing. Key topics include the development of ultra-low-power wake-up receivers that enable duty-cycled operation, the inte-gration of novel semiconductor devices for improved efficiency, and the exploration of alternative communication mediums that offer new trade-offs in power, range, and reliability.
Additionally, hybrid energy-harvesting techniques—such as RF energy scavenging, ultrasound, and body-channel wireless power transfer—show promise in enabling self-powered wireless nodes. Finally, we will examine other relevant research efforts in ultra-low-power and high-per-formance communication. As the demand for energy-efficient connectivity continues to grow, interdisciplinary collaboration across circuit design, device technology, and intelligent signal pro-cessing will be essential in shaping the next generation of sustainable IoT and healthcare systems.
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