Analysis of Dielectric Loss in a Helix Slow-wave Structure
DOI:
https://doi.org/10.14429/dsj.59.1558Keywords:
Circuit attenuation, circuit RF loss, dielectric attenuation, dielectric loss, equivalent circuit analysis, helix slow-wave structure, SWS, helix travelling-wave tube, TWTAbstract
Equivalent circuit analysis of a helix slow-wave structure was carried out and closed form expressions were derived for the shunt capacitance and shunt conductance per unit length of the transmission-line equivalent circuit of the structure. These equivalent circuit parameters were interpreted for the dielectric attenuation constant of the slow-wave structure. The analysis was computationally simple and showsed excellent agreement with published results. The analysis was furthered for predicting the dielectric loss in typical C-Ku band and Ka band helical slow-wave structures, and variation of dielectric loss with temperature.
Defence Science Journal, 2009, 59(5), pp.549-552, DOI:http://dx.doi.org/10.14429/dsj.59.1558
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