Ultra-Low-Power Radios Using Current-Reuse/Function-Reuse/Ultra-Low-Voltage Techniques
Pui-In (Elvis) Mak
Professor and Associate Director (Research)
State-Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau
Ultra-low-power (ULP) radios are the key element of a wide variety of Internet-of-Things (IoT) products. This lecture discusses the pros and cons of different state-of-the-art ULP RF techniques such as current-reuse, function-reuse and ultra-low-voltage. Toward self-powering by the environments, the opportunity of using energy-harvesting sources such as thermal, light and vibration will also be presented. State-of-the-art industrial radios will serve as the basis to underline the current achievements and project the future challenges.
Pui-In Mak is currently a Professor and Associate Director (Research) at the State-Key Laboratory of Analog and Mixed-Signal VLSI. His research interests are on analog and radio-frequency (RF) circuits and systems for wireless and multidisciplinary innovations. He is currently the Associate Editor of the IEEE Journal of Solid-State Circuits (JSSC) and IEEE Solid-State Circuits Letters (SSCL). He is/was the TPC Member of ISSCC, ESSCIRC and A-SSCC. He is/was the Distinguished Lecturer of both the IEEE Circuits and Systems Society and IEEE Solid-State Circuits Society.
Yan Zhu (诸嫣) (S’10- M’17) received the B.Sc. degree in electrical engineering and automation from Shanghai University, Shanghai, China, in 2006, and the M.Sc. and Ph.D. degrees in electrical and electronics engineering from the University of Macau Macao, China, in 2009 and 2011, respectively. She is now an assistant professor with the State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China. She received Best Paper award in ESSCIRC 2014, the Student Design Contest award in A-SSCC 2011, the Chipidea Microelectronics Prize and Macao Scientific and Technological R&D Awards in 2012, 2014 and 2016 for outstanding Academic and Research achievements in Microelectronics. She has published more than 50 technical journals and conference papers in her field of interests, and holds 3 US patents. Her research interests include low-power and wideband high-speed Nyquist A/D converters as well as digitally assisted data converter designs.
High Performance Hybrid ADCs & Digital Assisted Techniques
SAR ADCs achieve excellent power efficiency due to its simple architecture and dynamic operation, while its conversion speed is limited by its sequential conversion. Hybrid ADC takes the design advantages of multi conventional ADC architecture to optimize the conversion speed, resolution and power dissipation. This talk introduce a hybrid ADC architecture combining the flash, SAR and pipelined ADC with interleaving and op-amp sharing schemes to achieve near GHz sampling rate and 11 bit resolution. Moreover, some digital assisted solutions are also introduced that fix the conversion errors from offset, reference and nonlinearity from DAC.