Hi Experts,
I have a question about the 20GHz Local Oscillator (LO) signal (19 GHz to 20.25 GHz) in cascade mode.
As I know, each chip has a Local Oscillator which can generate the LO signal, the 40MHz crystal oscillator provides a reference signal to RF synthesizer from the timing engine to make sure the FMCW chirps is synchronous between different chips , so what's the function of the LO signal shared by the master chip?