Design of High Efficiency Broadband Amplifier and Automatic Test System

Abstract

Based on the GaN technology platform developed by Nanjing Electronic Device Institute, an L-band high efficiency power amplifier is designed. In order to improve the test efficiency and reduce manual intervention, the implementation of automatic test system based on LabVIEW development platform is proposed. According to the actual needs, the signal source and power meter instrument are controlled through GPIB interface technology to realize the power test, data acquisition and analysis of power amplifier. The test results show that under the input continuous wave signal of 31dbm and 28V drain working voltage, the output power is 41dBm and the maximum efficiency is 83%, which shows the high-efficiency performance advantages of GaN broadband power amplifier. At the same time, the software is proved to be extensible and maintainable.