Hello.
I want to use STUW81300 to create 9 GHz with great phase noise.
Reference: 50 MHz
PDF:50MHz
Single-Ended
STWPLSim v5.3 was used for the loop filter design.
However, the actual measurements were 3~7dB worse than the simulated values.
All settings seem to have been completed without any issues.
I would like to ask for advice if this difference is normal or if there is something wrong with the design.
Simulation:
-81dBm/Hz@100Hz offset
-94dBm/Hz@1KHz offset
-102 dBm/Hz@10KHz offset
-106dBm/Hz@100KHz offset
-124dBm/Hz@1MHz offset
Measurement:
-77dBm/Hz@100Hz offset
-88dBm/Hz@1KHz offset
-95dBm/Hz@10KHz offset
-103D Bm/Hz@100KHz offset
-120dBm/Hz@1MHz offset
