Recent progress in the development of compact solid-state, high voltage radar modulators

As the operating life of existing transmitters is extended, solid-state high voltage modulators are replacing conventional tube-type radar modulators in a range of transmitter upgrades and new designs. The new technology is a viable and cost-effective replacement for obsolete components. Further, it improves the reliability of the transmitter and delivers better protection to the RF amplifier. This paper summarizes DTI´s recent ongoing work in developing solid-state components for three different radar transmitter upgrades and one new design. The systems discussed include the AN/SPG-60 Fire Control Radar, the AN/FPQ-17 Multiple-Target Instrumentation Radar, the AN/SPS-49 Long Range Air Surveillance Radar, and an Advanced High-Power Solid-State Modulator for the NRL´s 94Ghz gyroklystron.