3Tech proposes in the phase I effort to provide a detailed feasibility report analyzing the existing high voltage DC power supplies in the communications aircraft for weight reduction possibilities. In addition, 3Tech proposes a novel multiphase High Voltage Power Converter to Navy to power the Radio Frequency Power Amplifiers in the aircraft. The power converter is based on modern high frequency soft switching technique operating in discontinuous conduction mode. It combines the best features of both power and resonant power conversion techniques. The unique features of this converter include light weight, high efficiency, low electromagnetic interference, improved input and output power quality and improved redundancy, the critical attributes of aerospace power supplies.