Prof. Nuno Borges Carvalho

• Full Professor at University of Aveiro, Portugal
• Senior Research Scientist with the Institute of Telecommunications, University of Aveiro
• Director of the Department of Electronics, Telecommunications and Informatics at UA
• IEEE Fellow

Biography

Nuno Borges Carvalho (S’97–M’00–SM’05-F’15) was born in Luanda, Angola, in 1972. He received his Diploma and Doctoral degrees in electronics and telecommunications engineering from the University of Aveiro, Aveiro, Portugal, in 1995 and 2000, respectively.

He is currently a Full Professor and a Senior Research Scientist with the Institute of Telecommunications, University of Aveiro, the director of the Department of Electronics, Telecommunications and Informatics at UA, and an IEEE Fellow. He coauthored Intermodulation in Microwave and Wireless Circuits (Artech House, 2003), Microwave and Wireless Measurement Techniques (Cambridge University Press, 2013), White Space Communication Technologies (Cambridge University Press, 2014) and Wireless Power Transmission for Sustainable Electronics (Wiley, 2020). He has been a reviewer and author of over 400 papers in magazines and conferences. He is the Editor in Chief of the Cambridge Wireless Power Transfer Journal, an associate editor of the IEEE Microwave Magazine, and former associate editor of the IEEE Transactions on Microwave Theory and Techniques and IET Microwaves Antennas and Propagation Journal.
He is the co-inventor of six patents. His main research interests include software-defined radio front-ends, backscatter communications, wireless power transmission, nonlinear distortion analysis, and measurements in microwave/wireless circuits and systems. He has been involved in the design of dedicated radios and systems for newly emerging wireless technologies.

Dr. Borges Carvalho is a member of the IEEE MTT ADCOM, the past chair of the IEEE Portuguese Section, TC-20 and TC-11, and also belongs to the technical committees, TC-25 and TC-26. He is also the Chair of the URSI Commission A (Metrology Group). He was the recipient of the 1995 University of Aveiro and the Portuguese Engineering Association Prize for the best 1995 student at the University of Aveiro, the 1998 Student Paper Competition (Third Place) of the IEEE Microwave Theory and Techniques Society (IEEE MTT-S) International Microwave Symposium (IMS), and the 2000 IEE Measurement Prize.

He is a Distinguished Lecturer for the RFID Council and was a previous Distinguished Microwave Lecturer for the IEEE Microwave Theory and Techniques Society. In 2023 he was the IEEE-MTT President.

Talk title: Nonlinear Aspects in Wireless Power Transfer (WPT) Systems

Abstract: Wireless Power Transfer (WPT) systems are composed of three key stages: the transmitter, the wireless energy beam, and the RF-to-DC converter. Both the transmitter and the RF-to-DC converter rely heavily on nonlinear components, presenting unique challenges in optimizing system performance. On the transmitter side, power amplifiers (PAs) are central to achieving high efficiency, while the RF-to-DC conversion is typically handled by rectifiers, often based on diode technology. The inherent nonlinearity of these components introduces significant complexities, particularly when striving to maximize overall energy efficiency.

This talk will provide an overview of the WPT concept, emphasizing its critical stages and the role of nonlinearity in shaping system behavior. Key unresolved nonlinear issues, such as the trade-offs in PA design and rectifier optimization, will be highlighted to inspire further research and innovation in this critical area. The presentation aims to engage the audience by showcasing the potential and the challenges of advancing WPT technology.