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

 
Abstract
The power generation of transistors drops as we move to higher frequencies. 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, we present a practical approach 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 with record beam steering range, tuning range, and output power at mm-wave and terahertz frequencies.
 
 
Omeed Momeni 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 ۲۰۰۲, ۲۰۰۶, and ۲۰۱۱, respectively.
He joined the faculty of Electrical and Computer Engineering Department at University of California, Davis in ۲۰۱۱ and is currently an Associate Professor. He was a visiting professor in Electrical Engineering and Computer Science Department at University of California, Irvine from ۲۰۱۱ to ۲۰۱۲. From ۲۰۰۴ to ۲۰۰۶, 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 ۲۰۲۱, a Distinguished Lecturer for Solid-State Circuits Society (SSCS) since ۲۰۲۰, and a Technical Program Committee member of International Microwave Symposium (IMS) since ۲۰۱۷ and Radio Frequency Integrated Circuits (RFIC) Symposium since ۲۰۱۸. He has also served as an Associate Editor of Transactions on Microwave Theory and Techniques (TMTT) in ۲۰۱۸-۲۰, an organizing committee member of IEEE International Workshop on Design Automation for Analog and Mixed-Signal Circuits in ۲۰۱۳, and the chair of the IEEE Ithaca GOLD section in ۲۰۰۸-۱۱. Prof. Momeni is the recipient of National Science Foundation CAREER award in ۲۰۱۵, the Professor of the Year ۲۰۱۴ by IEEE at UC Davis, the Best Ph.D. Thesis Award from the Cornell ECE Department in ۲۰۱۱, the Outstanding Graduate Award from Association of Professors and Scholars of Iranian Heritage (APSIH) in ۲۰۱۱, the Best Student Paper Award at the IEEE Workshop on Microwave Passive Circuits and Filters in ۲۰۱۰, the Cornell University Jacob’s fellowship in ۲۰۰۷ and the NASA-JPL fellowship in ۲۰۰۳.