LIGO Document E1101019-v1

Low Noise VCO Specifications

Document #:
LIGO-E1101019-v1
Document type:
E - Engineering documents
Other Versions:
Abstract:
A low noise VCO with a medium tuning range can be built by designing a frequency difference divider. A frequency difference divider takes an input signal divides it down and adds it to a fixed frequency low noise reference. If the input signal experiences a high phase noise, the phase noise in the output signal is reduced by the divider ratio---assuming all other noise sources are negligible. A second stage using another frequency difference divider can be added to yield even lower phase noise---albeit by giving up another factor of 10 in range.
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Keywords:
Low Noise VCO
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