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<<BR>> = Prototype model = ---- * Designed by Y. Enomoto (2018), inspired by LIGO low noise VCOs. [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8968| JGW-D1808968]] === Frequency Noise === * Worse than the specification for the non-divided phase noise ([[http://klog.icrr.u-tokyo.ac.jp/osl/?r=7425|klog 7425]]). . {{attachment:7425_20181218132925_lnvcopn2.png|Measured freq. noise (klog 7425) | width=400}} || ''' Freq [Hz] ''' || ''' Freq noise [Hz/Hz^1/2] ''' || ''' Phase noise [dBc/Hz] ''' || '''ROS-109-919 spec [dBc/Hz]'''|| || 0.01 || || 0.1 || || 1 || || 10 || || 100 || || 1,000 || || 10,000 || === Tuning Range === <<BR>> = Endeavour model = ---- . Sophisticated version of the prototype model. == Bill of Materials == |
Low Noise VCOs
Descriptions
Low phase noise, a center frequency of 70 MHz, actuation range of several 100 kHz, aaa dBm output
Prototype model
Designed by Y. Enomoto (2018), inspired by LIGO low noise VCOs. JGW-D1808968
Frequency Noise
Worse than the specification for the non-divided phase noise (klog 7425).
Freq [Hz]
Freq noise [Hz/Hz^1/2]
Phase noise [dBc/Hz]
ROS-109-919 spec [dBc/Hz]
0.01
0.1
1
10
100
1,000
10,000
Tuning Range
Endeavour model
- Sophisticated version of the prototype model.