1.51-GHz with Q
>10,000 Even in Air!
A result of
purposely impedance-mismatching a polydiamond disk with its polysilicon stem.
1.2-GHz with Q = 14,600!
Who says diamond is needed to get Q
>10,000 at GHz frequencies? With the right "hollow-disk" ring
design, polysilicon can do even better than diamond.
60-MHz Wine-Glass Disk Oscillator Makes
the GSM Reference Oscillator Spec!
handling and a Q >50,000 crucial in making the spec.
Arraying for Impedance <480W at 72MHz!
coupled resonator arrays automatically align resonator frequencies to allow
output summation for low impedance and higher power handling.
Electrical Engineering & Computer Sciences
Tel: (510) 642-6251
Micromechanical Resonator Wins
Best Paper Award at the 2005 IEEE Int. Frequency Control Symposium!
to Yu-Wei Lin for winning the Best Frequency Control Paper Award at the 2005
IEEE Int. Frequency Control Symposium.
Clock Overview Paper Wins the Jack Raper Award at the
2005 IEEE Int. Solid-State Circuits Conference!
to all those in the CSAC program (which Prof. Nguyen ran while at DARPA),
especially John Kitching from NIST, who co-authored this paper.
Vibrating RF MEMS Wins
Best Invited Paper Award at the 2004 IEEE Custom Integrated Circuits
Read this for an
overview on vibrating RF MEMS.
Oscillator Wins 2004 UFFC
Symposium Best Frequency Control Paper Award!
to Seungbae Lee for winning the Best Frequency Control Paper Award at the 2004
IEEE Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniv. Joint
Resonator Work Wins 2003 IEDM Best Paper Award!
to Yuan Xie for winning the 2003 Int. Electron Devices Meeting Roger A. Haken
Best Student Paper Award.
received the B. S., M. S., and Ph.D. degrees from the University of
California at Berkeley in 1989, 1991, and 1994, respectively, all in
Electrical Engineering and Computer Sciences. In
1995, he joined the faculty of the
, where he was a Professor in the Department of Electrical Engineering and
Computer Science up until mid-2006. In 2006, he joined the Department of
Electrical Engineering and Computer Sciences at the
, where he is presently a Professor and a co-Director of the
Sensor & Actuator
. His research interests focus upon micro electromechanical systems (MEMS)
and include integrated micromechanical signal processors and sensors,
merged circuit/micromechanical technologies, RF communication
architectures, and integrated circuit design and technology. From 1995 to
1997, he was a member of the National Aeronautics and Space Administration
(NASA)ís New Millennium Integrated Product Development Team on
Communications, which roadmapped future communications technologies for
NASA use into the turn of the century. In 2001, Prof. Nguyen founded
Discera, Inc., a company aimed at commercializing communication products
based upon MEMS technology, with an initial focus on the very vibrating
micromechanical resonators pioneered by his research in past years. He
served as Vice President and Chief Technology Officer (CTO) of Discera
until mid-2002, at which point he joined the Defense Advanced Research
Projects Agency (DARPA) on an IPA, where he served for 3.5 years as the
Program Manager of the MEMS, Micro Power Generation (MPG), Chip-Scale
Atomic Clock (CSAC), MEMS Exchange (MX), Harsh Environment Robust
Micromechanical Technology (HERMIT), Micro Gas Analyzers (MGA), Radio
Isotope Micropower Sources (RIMS), RF MEMS Improvement (RFMIP),
Navigation-Grade Integrated Micro Gyroscopes (NGIMG), and Micro Cryogenic
Coolers (MCC) programs, in the Microsystems Technology Office of DARPA.
Prof. Nguyen received the
1938E Award for Research and Teaching Excellence from the University of
Michigan in 1998, an EECS Departmental Achievement Award in 1999, the Ruth
and Joel Spira Award for Teaching Excellence in 2000, the University of
Michiganís 2001 Henry Russel Award, and the Cady Award from the 2006
IEEE Frequency Control Symposium. He
became an IEEE Fellow in January of 2007. Among
his publication accolades are the Jack Raper Award from 2005 IEEE
International Solid-State Circuits Conference, the 2004 DARPA Tech Best
Technical Presentation Award, the Best Invited Paper Award at the 2004
IEEE Custom Integrated Circuits Conference, and together with his
students, the Best Student Paper Award in Category 1 at the 2005 Joint
IEEE Frequency Control/Precise Time and Timing Interval (PTTI) Symposium,
the Best Student Paper Award in the Frequency Control Category at the 2004
IEEE Ultrasonics, Ferroelectrics, and Frequency Control Symposium, and the
Roger A. Haken Best Student Paper Awards at the 1998 and 2003 IEEE
International Electron Devices Meetings. To date, he has organized and
chaired a total of 35 IEEE and DARPA workshops, and is presently the North
American Technical Program Chair of Transducers'07.