|
Size: 1076
Comment:
|
Size: 1312
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 12: | Line 12: |
| === Frequency Noise === | === Noise performance === |
| Line 14: | Line 14: |
| * Most of the RF components are not secured to the chassis. This may cause undesired acoustic coupling. | |
| Line 16: | Line 17: |
| || ''' Freq [Hz] ''' || ''' Freq noise [Hz/Hz^1/2] ''' || ''' Phase noise [dBc/Hz] ''' || '''ROS-109-919 spec [dBc/Hz]'''|| || 0.01 || 5 || || --|| || 0.1 || 4 || || -- || || 1 || 0.1 || || -- || || 10 || 0.05 || || -- || || 100 || 0.05 || || -- || || 1,000 || 0.05 || || -- || || 10,000 || 0.03 || || -- || |
|| ''' Frequency [Hz] ''' || ''' Measured Frequency noise [Hz/Hz^1/2] ''' || ''' Equivalent Phase noise [dBc/Hz] ''' || '''ROS-102-919 specification w/o frequency division [dBc/Hz]'''|| || 0.01 || 5 || 51 || --|| || 0.1 || 0.4 || 9 || -- || || 1 || 0.1 || -23 || -- || || 10 || 0.05 || -49 || -- || || 100 || 0.05 || -69 || -- || || 1,000 || 0.05 || -89 || -98 || || 10,000 || 0.03 || -113 || -123 || || 100,000 || -- || -- || -143 || |
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
Noise performance
Worse than the specification for the non-divided phase noise (klog 7425).
- Most of the RF components are not secured to the chassis. This may cause undesired acoustic coupling.
Frequency [Hz]
Measured Frequency noise [Hz/Hz^1/2]
Equivalent Phase noise [dBc/Hz]
ROS-102-919 specification w/o frequency division [dBc/Hz]
0.01
5
51
--
0.1
0.4
9
--
1
0.1
-23
--
10
0.05
-49
--
100
0.05
-69
--
1,000
0.05
-89
-98
10,000
0.03
-113
-123
100,000
--
--
-143
Tuning Range
Endeavour model
- Sophisticated version of the prototype model.