Ultra-wideband High Power Space Pulsed Traveling-wave Tube Amplifier

With the development of microwave vacuum power technology and the needs of various satellite applications, a higher output power of space vacuum power amplifier is required. In order to meet the requirements of synthetic aperture radar (SAR) ,a 500W pulsed traveling-wave tube amplifier (TWTA) with the bandwidth of 6G in Ka band is presented in this paper. The main function of the pulsed TWAT is to receive the radio-frequency (RF) pulse signal of the radar transmitter and amplify its power to send to the antenna, and to receive both the pulse control signal and the telemetry signals from the data processor, and also to offer the radar system the corresponding telemetry signals. In this paper, a prototype is designed to verify the performance of the TWTA.