Events Calendar

MHI ISSS Seminar - Dr. Omeed Momeni, Friday, Nov. 4th at 2pm in EEB 132

Speaker: Omeed Momeni, University of California

Talk Title: Scalable Standing Wave Integrated Circuits for Reconfigurable Power Generation, Radiation and Beam Steering at mm-Wave and Terahertz Spectrum

Series: Integrated Systems

Abstract: The power generation of transistors declines as the operation frequency increases. At the same time, the
free space propagation loss increases, demanding more radiated power from the system. The loss of passive
elements in the circuit increases as well, making functions such as oscillation or radiation even more challenging. In
order to boost the limited power, multiple sources need to be coupled together in an array structure. However, the
significant loss of the coupling circuitry and phase shifters at mm-wave and terahertz frequencies hinders the
implementation of large and efficient radiator and phased arrays. Scalable standing wave array structures are
proposed based on efficient low loss coupling schemes in order to boost the power and operation bandwidth.
Furthermore, a practical approach is proposed to maximize Equivalent Isotropic Radiated Power (EIRP) of the
source by optimizing influential parameters of the radiation apparatus. Finally, we demonstrate a new phase shifting
method based on combining standing and traveling waves and show how it can achieve significantly higher
reconfigurability, phase shifting range and bandwidth. Using all these methods we present coupled-oscillators,
scalable radiator arrays, and reconfigurable phased arrays that can produce high resolution images and achieve
record beam steering range, tuning range, and output power at mm-wave and terahertz frequencies.

Biography: Dr. Omeed Momeni (S'04-M'12-SM'18) received the B.Sc. degree from Isfahan University of
Technology, Isfahan, Iran, the M.S. degree from University of Southern California, Los Angeles,
CA, and the Ph.D. degree from Cornell University, Ithaca, NY, all in Electrical Engineering, in
2002, 2006, and 2011, respectively. He joined the faculty of Electrical and Computer
Engineering Department at University of California, Davis in 2011 and is currently an
Associate Professor. He was a visiting professor in Electrical Engineering and Computer
Science Department at University of California, Irvine from 2011 to 2012. From 2004 to 2006,
he was with the National Aeronautics and Space Administration (NASA), Jet Propulsion Laboratory (JPL) as a RFIC
designer. His research interests include mm-wave and terahertz integrated circuits and systems.
Prof. Momeni serves as an Associate Editor for The IEEE Microwave and Wireless Components Letters (MWCL) since
2021, and a Technical Program Committee (TPC) member of Radio Frequency Integrated Circuits (RFIC) Symposium
since 2018. He has also served as a Distinguished Lecturer for Solid-State Circuits Society (SSCS) in 2020-22, an
Associate Editor of Transactions on Microwave Theory and Techniques (TMTT) in 2018-20, a Steering Committee
Member (2020) and Technical Program Review Committee Member (2017-20) of the International Microwave
Symposium (IMS), an organizing committee member of IEEE International Workshop on Design Automation for
Analog and Mixed-Signal Circuits in 2013, and the chair of the IEEE Ithaca GOLD section in 2008-11. Prof. Momeni is
the recipient of UC Davis Graduate Program Advising and Mentoring Award in 2022, National Science Foundation
CAREER award in 2015, the Professor of the Year 2014 by IEEE at UC Davis, the Best Ph.D. Thesis Award from the
Cornell ECE Department in 2011, the Outstanding Graduate Award from Association of Professors and Scholars of
Iranian Heritage (APSIH) in 2011, the Best Student Paper Award at the IEEE Workshop on Microwave Passive
Circuits and Filters in 2010, the Cornell University Jacob's fellowship in 2007 and the NASA-JPL fellowship in 2003.

Host: MHI - ISSS, Hashemi, Chen and Sideris

More Information: Abstract and Bio-Nov 4-Momeni.pdf

Location: Hughes Aircraft Electrical Engineering Center (EEB) - 132

Audiences: Everyone Is Invited

Contact: Marilyn Poplawski