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| == Endeavour model == [[https://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=8968| Prototype VCO JGW-D1808968]] |
<<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}} || ''' Frequency [Hz] ''' || ''' Measured Frequency noise [Hz/Hz^1/2] ''' || ''' Equivalent Phase noise [dBc/Hz] ''' || '''ROS-109-919 spec [dBc/Hz]'''|| || 0.01 || 5 || 51 || --|| || 0.1 || 4 || || -- || || 1 || 0.1 || || -- || || 10 || 0.05 || || -- || || 100 || 0.05 || || -- || || 1,000 || 0.05 || || -- || || 10,000 || 0.03 || || -- || === 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).
Frequency [Hz]
Measured Frequency noise [Hz/Hz^1/2]
Equivalent Phase noise [dBc/Hz]
ROS-109-919 spec [dBc/Hz]
0.01
5
51
--
0.1
4
--
1
0.1
--
10
0.05
--
100
0.05
--
1,000
0.05
--
10,000
0.03
--
Tuning Range
Endeavour model
- Sophisticated version of the prototype model.