Autonomous Wireless Sensors and RFID's: Energy harvesting, Material and Circuit Challenges

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• Dr. Apostolos Georgiadis, The Centre Tecnològic de Telecomunicacions de Catalunya (CTTC)
• Thursday 19 September 2013, 11:00-12:00
• Dennis Gabor Seminar Room (611), EEE Department.

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Energy considerations and challenges for low power system requirements and energy autonomous operation in emerging applications from health and biomedical systems, to smart homes and environmental monitoring are addressed. The state-of-the-art in commonly used energy harvesting technologies such as solar, piezoelectric, thermal and electromagnetic is presented. Figures of merit are provided and emphasis is placed on design challenges and novel technologies and materials, such as paper, textiles, and large volume inkjet printing fabrication. Hybrid–multiple technology harvesters are discussed and the development of low profile and conformal solar antennas and solar–electromagnetic harvesters is presented. Interest in electromagnetic energy harvesting is further attributed to the capability for powering of wireless devices by intentional radiation known as wireless power transmission. The latter is addressed and novel system concepts such as transmission of chaotic signals for optimum performance are proposed. Circuit and system examples of autonomous system operation are demonstrated such as wirelessly powered sensors, beacon signal generators, and energy harvesting applied to RFID systems.

Speaker’s Bio: Apostolos Georgiadis was born in Thessaloniki, Greece. He received his B.Sc. degree in physics and M.Sc. degree in telecommunications from the Aristotle University of Thessaloniki, Greece, in 1993 and 1996, respectively. He received his Ph.D. degree in electrical engineering from the University of Massachusetts at Amherst, in 2002. In 2007, he joined Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Barcelona, Spain, as a Senior Research Associate, where he is involved in energy harvesting and radio-frequency identification (RFID) technology and active antennas and antenna arrays. Since Apr. 2013 he is Coordinating the Microwave Systems and Nanotechnology Department at CTTC . He was the Chair of the 2011 IEEE RFID Technologies and Applications (RFID-TA) Conference. He was the Chairman of EU COST Action IC0803 , RF/Microwave communication subsystems for emerging wireless technologies (RFCSET). He serves as an Associate Editor of the IEEE Microwave Wireless Components Letters and IET Microwaves Antennas and Propagation journals. He is the Chair of the MTT -S Technical Committee TC-24 on RFID Technologies and member of TC-26 on wireless energy transfer and conversion. He is the co-founder and Editor-in-Chief of the Wireless Power Transfer journal published by Cambridge University Press.

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