I have simulated the phase noise of AD4371 to output LO signal between 11-11.5GzHz. ADISIM File attached.
The LO is applied to ADMV1017 which goes through x2 or x4 LO Multiplier which degrades the phase noise.
I like to improve the phase noise of the LO coming out of ADF4371. Can someone please advise how can I improve the phase noise?