Title :
Design and simulation of multi-severs high frequency structure of millimeter wave helix TWT
Author :
Yuan Feng;Jinjun Feng
Author_Institution :
National Key Laboratory of Science and Technology on Vacuum Electrons, Beijing Vacuum Electrons Research Institute, 13 Jiuxianqiao Road, Chaoyang District, Beijing, China, 100015
Abstract :
In this paper, helix slow-wave structures with one sever, two severs and three severs are proposed for kilowatt millimeter wave helix TWT. According to the small-signal theory of BWO, we can calculate the oscillation length of BWO. By setting different sever in TWTs, we successfully make the length of the un-attenuated part shorter than the threshold of BWO and finally achieve the suppression of BWO. Dispersion and coupling impedance are simulated by CST Microwave Studio and electron-wave interaction characteristic is simulated by 3-D large-signal interaction code MTSS. According to the results, these three kinds of design can produce over-1000W output power in 29GHz-31GHz frequency band with electron efficiency greater than 15%.
Keywords :
"Power generation","Couplings","Impedance","Dispersion","Millimeter wave communication","Millimeter wave radar"
Conference_Titel :
Millimeter Waves and THz Technology Workshop (UCMMT), 2015 8th UK, Europe, China
DOI :
10.1109/UCMMT.2015.7460592
