GW TEM-Mode Phase Shifter for High-Power Microwave Applications

In this paper, a gigawatt (GW) transverse electromagnetic wave (TEM)-mode phase shifter (TPS) used to adjust the phase of output of high-power microwave is investigated. The phase shifter is composed of two identical coaxial TE
₁₁
circular polarizers, and can adjust the output microwave phase in a range of 0°-360°. The electrical behaviors are analyzed in theory and simulated by the CST software, the results show that the TPS at frequency 1.79 GHz can adjust the microwave phase in a range of 0°-360°, the transmission in this range of phase-shifting process is over 97.5%, and the power-handling capacity is as high as 5.3 GW.