Pulsed RF Operation Analysis

The need for a very low final amplifier output impedance, always associated with class "A" operation, requires a very large power waste in the final tube. The recently suggested pulsed rf operation, while saving a large amount of power, increases the inherent final amplifier non linearity. A method is presented for avoiding the "large signal non linear analysis" and it is shown how each component of the beam induced voltage depends upon all the beam harmonics via some "coupling coefficients" which are evaluated.