Design and Testing of 2-kW TRM for a VHF Active Phased Array ST Radar at University of Calcutta

This paper describes the design and performance evaluation of a 2-kW solid state power amplifier (SSPA) based Transmit - Receive Module (TRM), operating at 53 MHz with maximum duty ratio of 5 % used in the University of Calcutta Stratosphere – Troposphere (ST) Radar system. The TRM design consists of different sections and a major 2-stage cascaded power amplifiers section in the transmit path. The testing involves the peak RF power output of the TRM and with different pulse widths. The TRM is tested for harmonics/spurious response, rise time, fall time and shape of the pulse spectrum.