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Frequency stability of high overtone bulk acoustic resonators

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4 Author(s)
Bailey, D.S. ; Westinghouse Electron. Syst. Group, Baltimore, MD, USA ; Driscoll, M.M. ; Jelen, R.A. ; McAvoy, B.R.

The authors report the results of phase noise measurements for high overtone bulk acoustic resonators (HBARs) operating at 640 MHz with insertion losses of 10-15 dB and unmatched Qs greater than 110 K. Noise measurements made on these resonators with input drive levels of 16 dBm have shown self-noise levels of Sy(f =100 Hz)=8.0×10-26 for 1/f noise, which represents the state-of-the-art for a UHF resonator. It is concluded that HBAR technology provides the means for generating UHF and microwave signals exhibiting short-term frequency stability superior to that obtainable using quartz resonator based sources

Published in:
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990

Date of Conference: 4-7 Dec 1990

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