Main Question or Discussion Point
Will the frequency of EM waves produced by oscillating current in an LC circuit be the same as the frequency of the current?
I mean to say, LC circuits produce EM waves due to current oscillation. Is this the source of the microwaves? Or is the source instead, the electrons orbitting the cathode being decelerated/accelerated giving off their energy as EM waves?I am not quite sure what your question is, but the geometry of the magnetron cavity (slot dimensions, etc,) is equivalent to the physical L and C in a plate circuit (of a vacuum tube). The driving frequency in a magnetron is set by the magnitude of the magnetic field, e.g., 875 Gauss for 2.45 GHz (microwave oven). In both the vacuum tube and the magnetron, the driving force (grid signal or magnetic field) and not the physical parameters (L & C or magnetron geometry) determines the outout frequency