Title :
Analysis of sever-loss in a helical slow-wave structure
Author :
Naidu, Vemula Bhanu ; Datta, Subrata Kumar ; Rao, P. Raja Ramana ; Agrawal, Avadesh Kumar ; Reddy, S. Umamaheshwara ; Kumar, Lalit ; Basu, Baidyanath
Author_Institution :
Microwave Tube Res.&Dev. Centre, Bangalore
Abstract :
Attenuator-coated helix-support rods in a helical slow-wave structure were modeled by considering them to be made up of lossy dielectric material having equivalent bulk conductivity. The same conductivity values were used in 3D HFSS modeling of the helical slow-wave structure having the helix supported by three such support rods inside a metal envelope, and the attenuation constant of the structure was found. The proposed approach was used to characterize the attenuation constants in the sever region of a typical X-Ku band slow-wave structure and benchmarked against measurement.
Keywords :
dielectric materials; electrical conductivity; slow wave structures; 3D HFSS modeling; X-Ku band slow-wave structure; attenuation constant; attenuator-coated helix-support rods; equivalent bulk conductivity; helical slow-wave structure; lossy dielectric material; Attenuation measurement; Conductivity measurement; Dielectric loss measurement; Dielectric losses; Dielectric materials; Dielectric measurements; Insertion loss; Loss measurement; Structural rods; Tellurium; Helix slow-wave structure (SWS); Helix traveling-wave tube (TWT); Sever-attenuation; Sever-loss;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556355
