Hi all,

I am working on a design In which I have two clock that needs to be in sync always, however these two clocks are from different source. I want to add a phase shifter or delay line in between one of the clock so I can adjust the phase difference after the manufacture of the PCB.
The frequency of the clocks are 4 GHz. I could not find any phase shifter that can work at this frequency.
Is there any device on any other method through which I can adjust the phase on PCB

Thanks