If I have say two square waves, each 180 degrees out of phase. Say during period A I advance one slightly ahead in phase, and the second slightly back. and on period B I do the opposite.
If I sum them bridged-tied load into a resistor, I get a sub-harmonic at half the original period cuz I'm jittering forard and back over two cycles of the original period.
I'm thinking if I'm not wrong if I jitter them correctly I should be able to run the outputs thru a common mode? differential? choke and eliminate the sub-harmonic, that is make the sub-harmonic common mode and the original fundamental and higher harmonics differential mode. Or vice versa. Maybe I have to jitter them in the same direction. Or with different timing. Or something. Any ideas?