I received some questions about noise issue of ADF5355 from our customer.
Following is evaluation result of phase noise of ADF5355. The phase noise of customer's board is around 10 to 20dB worse than ADF5355 Eva. board. Do you have any idea for improving the phase noise or check points?
Following pictures are evaluation results of spurious noise of the customer's boars and the ADF5355 Eva. board. The spurs of the customer's board are around 10dB bigger than ADF5355 Eva. board. Do you have any idea for improving the spurious noise or check points?