April 30, 2012
The Data Storage Systems Center, in conjunction with Carnegie Mellon's Electrical and Computer Engineering Department and the IEEE Magnetics Society's Pittsburgh Chapter, hosted a special seminar this month featuring IEEE Magnetics Society Distinguished Lecturer Masahiro Yamaguchi. IEEE Distinguished Lecturers are engineering professionals who lead their fields in new technical developments that shape the global community. For the IEEE Magnetics Society, specifically, the distinguished lecturer exhibits excellence in the field of magnetics — not only in research, but also in developing the applied or technical aspects of the field — and outstanding communication skills.
Yamaguchi, a professor of electrical and communication engineering at Tohoku University in Japan, used those communication skills to deliver the talk, "Soft Magnetic Thin Film Applications at Radio Frequencies." In it, Yamaguchi reviewed new soft magnetic thin film applications at radio frequencies for future system-in-package and system-on-chip technologies. He also discussed the development of international cross measurements of RF permeameters to evaluate RF permeability and related FMR profiles of magnetic films; small signal, high permeable, low loss applications to CMOS integrated inductors; small signal lossy application to CMOS integrated electromagnetic noise suppressors; small to medium signal applications as new metal/ferromagnetic multistack "conductors" to suppress skin effect utilizing negative permeability beyond the FMR frequency [µr'< 0, µr"˜0]; and large current permeable application to point-of-load type one-chip DC-DC converters. He concluded his lecture with an outlook on the future of on-chip RF magnetics.
"Professor Yamaguchi's successful research provides an excellent solution for suppressing on-chip electro-magnetic interference for high speed communication devices, and is critical in this mobile communication era," said DSSC Director and ABB Professor of Engineering Jimmy Zhu, chair of the Pittsburgh Chapter of the IEEE Magnetics Society. "His research spans the areas of magnetics and communication integrated circuits, and his talk appealed to many people in different fields."
Yamaguchi earned his bachelor's, master's and doctor's degrees in electrical engineering from Tohoku University in 1979, 1981 and 1984, respectively. He was an associate professor with the Research Institute of Electrical Communication at Tohoku University from 1991 to 2003, and in 1995 was a visiting associate professor at the University of Wisconsin-Madison. Since 2003, he has served as a professor in the Department of Electrical and Communication engineering at Tohoku University, where he has also participated in the New Industry Creation Hatchery Center. Yamaguchi established and served as general chair for the International Workshop on High Frequency Micromagnetic Devices and Materials, and has served as the IEEE Magnetics Society Japan-Sendai Chapter Chair (2007), co-editor-in-chief for the Magnetics Society of Japan (2007–2010), and board member of Japan Institute of Electronics Packaging (2008–2010). He is the chairman of the committees on On-Chip RF Magnetics of the Institute of Electrical Engineers of Japan (2011–2014).