I am using HMC704LP5 and HMC509LP5.
The output frequency of this PLL circuit is 8185 MHz and PLL is locked.
But spurious frequency occured. Frist spurious frequency is 8185 MHz +/- 180Hz.
The frist spurious levle compared to 8185MHz, it is -40dBc.
Spurious range is that from +/-180Hz to about +-/900Hz.
Except for the regulator, other circuit is same HMC704LP4E Eval. PCB Schematic.
I atteched measurment 2files.
How can I remove this spurious?