Dr. Giorgio Casinovi – Publications
A 145MHz Low Phase-Noise Capacitive Silicon Micromechanical Oscillator
H. M. Lavasani, A. K. Samarao, G. Casinovi and F. Ayazi
IEEE International Electron Devices Meeting
pp. 675–678, December 2008
Abstract
This paper reports on the implementation and characterization
of a low phase-noise oscillator based on a very high quality
factor (Q) 145MHz capacitive silicon micromechanical resonator.
The utilized resonator is a silicon bulk acoustic resonator
SiBAR) operating in its first width-extensional mode with a
maximum Qunloaded~74,000 that is specifically
optimized for low motional impedance. The sustaining circuitry
is a 3.6 mW CMOS transimpedance amplifier (TIA) that uses
common source topology with local shunt-shunt feedback. The
measured phase-noise of the oscillator at 1 kHz offset
from the carrier is -111 dBc/Hz with phase-noise floor
reaching below -133 dBc/Hz.
 |
Full text |
Last revised on January 14, 2014.