Title :
Broadbanding of a helical slow-wave structure using chiral dielectric loading
Author :
Datta, S.K. ; Jayashree, E.V. ; Veena, S.D. ; Kumar, L.
Author_Institution :
Microwave Tube Res. & Dev. Centre, Defence Res. & Dev. Organ., Bangalore, India
Abstract :
A simple scheme of broadbanding a helical slow-wave structure is proposed using helix support structure made of composite chiral dielectric material. The dispersion relation of the slow-wave structure obtained by sheath-helix field analysis and the dispersion behavior of a typical structure analyzed. It was seen that negative dispersion characteristics, required for broadband operation of the device, could be achieved by merely controlling the chirality parameter alone.
Keywords :
chirality; dispersion relations; slow wave structures; broadband operation; broadbanding scheme; chiral dielectric loading; chirality parameter control; composite chiral dielectric material; dispersion behavior; dispersion relation; helical slow-wave structure; helix TWT; helix support structure; helix traveling-wave tube; multi-octave bandwidth; negative dispersion characteristics; sheath-helix field analysis; Anisotropic magnetoresistance; Boundary conditions; Dielectric breakdown; Dielectric materials; Dispersion; Electron tubes; Radio frequency; Thermal management; Tungsten; Velocity control;
Conference_Titel :
Infrared and Millimeter Waves, 2002. Conference Digest. Twenty Seventh International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-7423-1
DOI :
10.1109/ICIMW.2002.1076211
