Low noise microwave signal generation: resonator/oscillator comparisons

The author compares existing and projected microwave signal spectral performance obtainable using various types of acoustic and non-acoustic high-Q resonators. Included is a discussion of recent progress in resonator technology such as improvements in conventional dielectric resonator and quartz cry...

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Bibliographic Details
Published inIEEE MTT-S International Microwave Symposium Digest pp. 261 - 264 vol.1
Main Author Driscoll, M.M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1989
Subjects
Acoustic noise
Dielectrics
Frequency
Microwave generation
Microwave oscillators
Microwave technology
Noise generators
Signal generators
Superconducting device noise
Superconducting microwave devices
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Summary:The author compares existing and projected microwave signal spectral performance obtainable using various types of acoustic and non-acoustic high-Q resonators. Included is a discussion of recent progress in resonator technology such as improvements in conventional dielectric resonator and quartz crystal resonator performance, development of composite UHF resonators such as the high-overtone bulk acoustic resonator (HBAR) exhibiting tenfold increase in Q and decrease in vibration and sensitivity (compared to quartz), and superconducting cavity-type resonators exhibiting ultrahigh Q directly at microwave frequency. It is concluded that the generation of low-noise microwave signals depends, to a large extent, on resonator performance parameters including Q, short-term frequency stability, drive level, operating frequency, and are quite process-variable and consideration of device yield is important. Selection of optimum resonator technology (or multiple technologies) must be tailored to specific signal spectral performance requirements.< >
DOI:10.1109/MWSYM.1989.38714