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231223s1992 xx ||||| 00| ||eng c |
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|a pubmed25n0592.xml
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|a (DE-627)NLM177550376
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|a (NLM)18267694
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Driscoll, M M
|e verfasserin
|4 aut
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|a Extremely low phase noise UHF oscillators utilizing high-overtone, bulk-acoustic resonators
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|c 1992
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 02.10.2012
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|a Date Revised 12.02.2008
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a High-overtone, bulk acoustic resonators (HBAR) have been designed that exhibit 9-dB insertion loss and loaded Q values of 80000 at 640 MHz with out-of-phase resonances occurring every 2.5 MHz. These resonators have been used as ovenized frequency-control elements in very low phase noise oscillators. The oscillator sustaining stage circuitry incorporates low-1/f noise modular RF amplifiers, Schottky-diode ALC, and a miniature 2-pole helical filter for suppression of HBAR adjacent resonant responses. Measurement of oscillator output signal flicker-of-frequency noise confirms that state-of-the-art levels of short-term frequency stability have been obtained. Sustaining stage circuit contribution to resulting oscillator flicker-of-frequency noise is 7-10 dB below that due to the resonators themselves. At 16-dBm resonator drive, an oscillator output signal white phase noise floor level of -175 dBc/Hz is achieved
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|a Journal Article
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1 |
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|a Jelen, R A
|e verfasserin
|4 aut
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1 |
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|a Matthews, N
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t IEEE transactions on ultrasonics, ferroelectrics, and frequency control
|d 1986
|g 39(1992), 6 vom: 28., Seite 774-9
|w (DE-627)NLM098181017
|x 1525-8955
|7 nnns
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| 773 |
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|g volume:39
|g year:1992
|g number:6
|g day:28
|g pages:774-9
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_NLM
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|a GBV_ILN_22
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|a GBV_ILN_24
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|a GBV_ILN_350
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|a AR
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| 952 |
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|d 39
|j 1992
|e 6
|b 28
|h 774-9
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