The effect of the device mismatch on parameters of GaN MMIC phase shifters

The article presents the results of the design of GaN phase shifter for MIMO-based antennas. The optimization and simulation for each operating frequency 0.1-31.5 GHz was performed along with simulation of effect of capacitance mismatch on phase shifter parameters. The phase shifter is designed as a switchable high-pass filter that provides a 90° phase shift with minimum insertion losses at the operating frequency. Designed phase shifter works in the frequency bands up to 55 GHz.