Abstract: A system and method for generating a plurality of short RF pulses. The system and method comprises a first circuit comprising a first power supply and a plurality of first networks for generating a first output signal in a form of a high voltage pedestal pulse supplied to a common node, and a second circuit comprising a second power supply and a plurality of second networks for generating a second output signal in a form of a high voltage short pulse which is supplied to the common node. The pedestal pulse passes through a blocking inductor before being combined with the short pulse at the common node, and the short pulse is stacked on top of the pedestal pulse to form a combined high voltage pulse. A low frequency magnetron is coupled to the common node for receiving the stacked combined high voltage pulse and generating a short RF pulse.