Title :
A New Compact High-Power Microwave Phase Shifter
Author :
Chao Chang ; Letian Guo ; Tantawi, Sami G. ; Yansheng Liu ; Jiawei Li ; Changhua Chen ; Wenhua Huang
Author_Institution :
Sci. & Technol. on High Power Microwave Lab., Northwest Inst. of Nucl. Technol., Xi´an, China
Abstract :
A new compact low-loss fast phase-shift high-power microwave (HPM) phase shifter (PS) is proposed, designed, and cold and high-power tested. Firstly, based on solving the scattering matrix and eigenvectors, we design a novel HPM dual circular polarizer, and then a dumbbell-like metal plug driven by a high-speed servomotor is used to slide a short circuit along the dual circular polarized port to adjust the output RF phase, which varies 180° by moving the plug with a quarter of the guided wavelength. The X-band PS has a total length of 9.5 cm and a power capacity achieved 300 MW at 30-ns HPM pulse. A fast phase shift of 310° was achieved within 0.1 s in test, a high precision of phase shift 1° can be realized, and the tested insertion loss was <; 0.15 dB.
Keywords :
S-matrix theory; eigenvalues and eigenfunctions; microwave phase shifters; servomotors; HPM dual circular polarizer; X-band PS; compact low-loss fast phase-shift high-power microwave phase shifter; dual circular polarized port; dumbbell-like metal plug; eigenvector; high speed servomotor; output RF phase adjustment; power 300 MW; scattering matrix; short circuit; size 9.5 cm; time 0.1 s; time 30 ns; Microwave FET integrated circuits; Microwave circuits; Microwave communication; Plugs; Ports (Computers); Rectangular waveguides; Scattering; High power microwave (HPM); phase shifter (PS);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2015.2423281
