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
- Page(s):
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509
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512 vol.1
- Meeting Date :
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04 Dec 1990-07 Dec 1990
- INSPEC Accession Number:
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4101607
- Conference Location :
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Honolulu, HI
- Digital Object Identifier :
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10.1109/ULTSYM.1990.171417
- Product Type:
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Conference Publications