Low Noise VCO Specifications

Document #:

LIGO-E1101019-v1

Document type:

E - Engineering documents

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.

Files in Document:

• E1101019-v1.pdf (526.4 kB)

Topics:

• Sensing and Control

Authors:

• Daniel Sigg

Keywords:

Low Noise VCO

Referenced by:

• LIGO-E1200120: aLIGO, ISC, RF System, Low Noise VCO