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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.

 

1.5-GHz Diamond Disk Resonator With Q >10,000 in Both Air and Vacuum -- at 500 MHz, holds the record on-chip frequency-Q product! (2004)

 

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.

 

Vibrating RF MEMS Wins Best Invited Paper Award at the 2004 IEEE Custom Integrated Circuits Conference (2004)

Resonator Array Oscillator Wins 2004 UFFC Symposium Best Frequency Control Paper Award (2004)

 

60-MHz Wine-Glass Disk Oscillator Nearly Makes

the GSM Reference Oscillator Phase Noise Spec (2004)

 

1.2-GHz Polysilicon Micromechanical "Hollow Disk" Resonator

Using Isolating Supports To Achieve Q=14,600 (2004)

  2004 Conference Publications:

M. A. Abdelmoneum, M. U. Demirci, S.-S. Li, and C. T.-C. Nguyen, “Post-fabrication laser trimming of  micromechanical filtersTechnical Digest, IEEE Int. Electron Devices Mtg., San Francisco, California, Dec. 13-15,  2004, pp. 39-42.

C. T.-C. Nguyen, “Vibrating RF MEMS for next generation wireless applicationsProceedings, 2004 IEEE Custom Integrated Circuits Conf., Orlando, Florida, Oct. 3-6, 2004, pp. 257-264. (best paper award winner)

S. Lee and C. T.-C. Nguyen, “Mechanically-coupled micromechanical arrays for improved phase noiseProceedings, IEEE Int. Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniv. Joint Conf., Montreal, Canada, Aug. 24-27, 2004, pp. 280-286. (best paper award winner)

M. A. Abdelmoneum, M. U. Demirci, Y.-W. Lin, and C. T.-C. Nguyen, “Location-dependent tuning of vibrating micromechanical resonators via laser trimmingProceedings, IEEE Int. Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniv. Joint Conf., Montreal, Canada, Aug. 24-27, 2004, pp. 272-279.

S.-S. Li, M. U. Demirci, Y.-W. Lin, Z. Ren, and C. T.-C. Nguyen, “Bridged micromechanical filtersProceedings, IEEE Int. Ultrasonics, Ferroelectrics, and Frequency Control 50th Anniv. Joint Conf., Montreal, Canada, Aug. 24-27, 2004, pp. 144-150.

S. Lee and C. T.-C. Nguyen, “Phase noise amplitude dependence in self-limiting wine-glass disk oscillatorsTech. Digest, 2002 Solid-State Sensor, Actuator, and Microsystems Workshop, Hilton Head, South Carolina, June 6-10, 2004, pp. 33-36.

Y.-W. Lin, S. Lee, S.-S. Li, Y. Xie, Z. Ren, and C. T.-C. Nguyen, “60-MHz wine glass micromechanical disk reference oscillatorDigest of Technical Papers, 2004 IEEE International Solid-State Circuits Confer­ence, San Francisco, California, Feb. 15-19, 2004 , pp. 322-323.

J. Wang, J. E. Butler, T. Feygelson, and C. T.-C. Nguyen, “1.51-GHz polydiamond micromechanical disk resonator with impedance-mismatched isolating supportProceedings, 17th Int. IEEE Micro Electro Mechanical Systems Conf., Maastricht, The Netherlands, Jan. 25-29, 2004 , pp. 641-644.

S.-S. Li, Y.-W. Lin, Y. Xie, Z. Ren, and Clark T.-C. Nguyen, “Micromechanical Hollow-Disk Ring ResonatorsProceedings, 17th Int. IEEE Micro Electro Mechanical Systems Conf., Maastricht, The Netherlands, Jan. 25-29, 2004, pp. 821-824.

 

 

Last Updated Tuesday, Aug. 7, 2012.

Contents copyright @ 2012. All rights reserved.

To report errors, please email: ctnguyen@eecs.berkeley.edu