Title :
An ultra wideband helical groove waveguide TWT
Author :
Wei, Yanyu ; Wang, Wenxiang ; Jia, Baoh ; Sinha, A.K. ; Liu, Sheng-Gang ; Park, Gun-Sik
Author_Institution :
Sch. of Phys., Seoul Nat. Univ., South Korea
Abstract :
A coaxial helical groove waveguide with step-shaped groove profile, loaded by the annular electron beam guided by a strong magnetic field, has been proposed to produce ultra-wideband coherent radiation of higher frequency electromagnetic waves. The structure has been analyzed for hot dispersion and small signal gain. It is found that compared with other available coaxial helical groove structures, the present structure has dispersion free regimes for an ultra wideband frequency range; therefore the operation bandwidth can be remarkably extended.
Keywords :
UHF tubes; electron beams; helical waveguides; travelling wave tubes; annular electron beam; coaxial helical groove waveguide; dispersion free regimes; helical groove waveguide TWT; hot dispersion; magnetic field; operation bandwidth; small signal gain; step-shaped groove profile; ultra-wideband TWT; ultra-wideband coherent radiation; Coaxial components; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic waveguides; Electron beams; Frequency; Magnetic analysis; Magnetic fields; Signal analysis; Ultra wideband technology;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on
Print_ISBN :
0-7803-7486-X
DOI :
10.1109/ICMMT.2002.1187640
