AtticusWang
Newbie level 5
There are two LO signals in my mixer design. One frequency is 2.5G, the other is 5G. Now I need to control the phase of of both LO signals:
when the 2.5GHz signal(sine wave) is crossing the zero point, the 5GHz signal is at its lowest point.
I have tried to use LO buffers(inverter chain)to set delay to the LO signals, but the result varies a lot due to different PVT.
Anyone who can give me ideals about how to accurately control the phase of LO? Thanks a lot!
when the 2.5GHz signal(sine wave) is crossing the zero point, the 5GHz signal is at its lowest point.
I have tried to use LO buffers(inverter chain)to set delay to the LO signals, but the result varies a lot due to different PVT.
Anyone who can give me ideals about how to accurately control the phase of LO? Thanks a lot!