Title :
Design of output structures for a W-band sheet beam travelling wave tube
Author :
Yang, L.Y. ; Wang, J.X. ; Liu, G. ; Shu, G.X. ; Zheng, Y. ; Dong, K. ; Luo, Y.
Author_Institution :
Sch. of Phys. Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Two output structures constructed by multiple apertures in E-and H-planes were designed for a W-band broadband sheet beam traveling wave tube (TWT). E-plane coupler can achieve 32% relative bandwidth and perform excellent port isolation. In comparison, another output coupler built by multi-aperture in H-plane was demonstrated, which is much convenient for PCM focusing system and can be easily integrated with a more compact dimension. Both of the couplers show excellent performance of broadband operation, low reflection and high transmission.
Keywords :
travelling wave tubes; waveguide couplers; E-plane coupler; E-planes; H-planes; PCM focusing system; TWT; W-band broadband sheet beam traveling wave tube; multiple apertures; output coupler; Apertures; Bandwidth; Couplers; Couplings; Electromagnetic waveguides; Electron tubes; Reflection; broadband; multi-aperture couplers; sheet beam TWT;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223843
