Flicker Noise Measurement of Phase Shifters Using Interferometric Noise Measurement System

Abstract

The interferometric flicker noise measurement system was set up and calibrated by using a novel two source frequency sweeping method. This measurement system features a noise floor of -172 dBrad2/Hz which is sufficient to measure two port microwave components with super low flicker noise. Also some typical microwave phase shifters with super low flicker noise were measured and compared for the first time. It aims to charac-tering the noise performance of the microwave phase shifters which are critical to the real construction or hardware-in-loop simulation of phased array and multi-channel applications.