I am not sure what your point is. It is possible to change the phase of a signal. In fact, a simple capacitor or inductor will do it. With high power systems i

I am not sure what your point is. It is possible to change the phase of a signal. In fact, a simple capacitor or inductor will do it. With high power systems it might not be practical to do it with a single capacitor or inductor but it still can be done.