Speaker: Prof. David J. Allstot, Dept. of Electrical Engineering, University of        Washington, USA

Time: 10:00-11:30am, Sept.20th (Tuesday)

Place: Room 105, Microelectronics Building

Abstract:

The RF power amplifier dissipates a large fraction of the total power of a transceiver because of its low efficiency. Despite more than two decades of intensive research, the challenge of on-chip RF PAs with high efficiency in digital-friendly CMOS technologies has not been met. A new paradigm—the switched-capacitor RF power amplifier—which meets many of the remaining challenges is described.

Body-area-networks (BAN) that integrate multiple sensor nodes in portable and wearable bio-medical systems are revolutionizing healthcare. A typical BAN comprises several bio-signal and motion sensors and uses ultra-low-power short-haul radios in conjunction with nearby smart-phones or handheld devices (with GPS capabilities) to communicate via the internet with a doctor or other healthcare professional. Higher energy efficiency is critical to the development of feature-rich, wearable and reliable personal health-monitoring systems.

The second part of this talk will overview compressed sensing techniques and describe a switched-capacitor analog front-end for bio-signal acquisition.

Biography:

David J. Allstot received the B.S. from the Univ. of Portland, the M.S. from Oregon State Univ. and the Ph.D. from the Univ. of California, Berkeley. He has held several industrial and academic positions and has been the Boeing-Egtvedt Chair Professor of Engineering at the Univ. of Washington since 1999. He was Chair of the Dept. of Electrical Engineering from 2004 to 2007. Dr. Allstot has advised approximately 100 M.S. and Ph.D. graduates, published about 300 papers, and received several awards. He has also been active in service to IEEE and became the IEEE Fellow in 1992.