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Must
Read Papers:
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!
Higher power
handling and a Q >50,000 crucial in making the spec.
Arraying for Impedance <480W at 72MHz!
Mechanically
coupled resonator arrays automatically align resonator frequencies to allow
output summation for low impedance and higher power handling.
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Electrical
Stiffness Temperature Compensated Resonator With
Only
18 ppm Total Frequency Shift from 25-125oC (2002)
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The
Latest Award
Winning Papers:
Solid-Gap Vibrating
Micromechanical Resonator Wins
Best Paper Award at the 2005 IEEE Int. Frequency Control Symposium!
Congratulations
to Yu-Wei Lin for winning the Best Frequency Control Paper Award at the 2005
IEEE Int. Frequency Control Symposium.
Chip-Scale Atomic
Clock Overview Paper Wins the Jack Raper Award at the
2005 IEEE Int. Solid-State Circuits Conference!
Congratulations
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
Conference!
Read this for an
overview on vibrating RF MEMS.
Resonator Array
Oscillator Wins 2004 UFFC
Symposium Best Frequency Control Paper Award!
Congratulations
to Seungbae Lee for winning the Best Frequency Control Paper Award at the 2004
IEEE Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniv. Joint
Conf.
Ext. Wine-Glass
Resonator Work Wins 2003 IEDM Best Paper Award!
Congratulations
to Yuan Xie for winning the 2003 Int. Electron Devices Meeting Roger A. Haken
Best Student Paper Award.
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CVD
Polydiamond Folded-Beam Comb-Driven Resonator (2002)
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2002
Conference Publications: |
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C.
T.-C. Nguyen, “Vibrating
RF MEMS for low power communications (invited),” Proceedings,
2002 MRS Fall Meeting, Boston, Massachusetts,
Dec. 2-6, 2002, pp. J12.1.1-J12.1.12.
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C.
T.-C. Nguyen, “RF
MEMS for wireless applications (invited keynote),”
Conf. Digest, 2002 Device Research Conference, Santa Barbara,
California, June 24-26, 2002, pp. 9-12.
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J.
Wang, J. E. Butler, D. S. Y. Hsu, and C. T.-C. Nguyen, “High-Q
micromechanical resonators in CH4-reactant-optimized high
acoustic velocity CVD polydiamond,” Tech. Digest, 2002
Solid-State Sensor, Actuator, and Microsystems Workshop,
Hilton Head, South Carolina, June 2-6, 2002, pp. 61-62.
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Y.
Xie and C. T.-C. Nguyen, “A
low-voltage tiltable microplatform using bent-beam actuation” Tech.
Digest, 2002 Solid-State Sensor, Actuator, and Microsystems Workshop, Hilton Head, South Carolina, June 2-6, 2002,
pp. 350-353.
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W.
-T. Hsu and C. T. -C. Nguyen, “Stiffness-compensated
temperature-insensitive micromechanical resonators,” Tech. Digest,
2002 IEEE Int. Micro Electro Mechanical Systems Conf., Las Vegas,
Nevada, Jan. 20-24, 2002, pp. 731-734.
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J.
Wang, J. E. Butler, D. S. Y. Hsu, and C. T.-C. Nguyen, “CVD
polycrystalline diamond high-Q micromechanical resonators” Tech.
Digest, 2002 IEEE Int. Micro Electro Mechanical Systems Conf., Las Vegas,
Jan. 20-24, 2002, pp. 657-660.
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