Analysis of Dielectric Loss in a Helix Slow-wave Structure

Authors

  • S. K. Datta Microwave Tube Research & Development Centre, Bangalore
  • Lalit Kumar Microwave Tube Research & Development Centre, Bangalore
  • B. N. Basu Banaras Hindu University, Varanasi

DOI:

https://doi.org/10.14429/dsj.59.1558

Keywords:

Circuit attenuation, circuit RF loss, dielectric attenuation, dielectric loss, equivalent circuit analysis, helix slow-wave structure, SWS, helix travelling-wave tube, TWT

Abstract

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

Author Biographies

S. K. Datta, Microwave Tube Research & Development Centre, Bangalore

Microwave Tube Research & Development Centre, Bengaluru-560 013

Lalit Kumar, Microwave Tube Research & Development Centre, Bangalore

Microwave Tube Research & Development Centre, Bengaluru-560 013

B. N. Basu, Banaras Hindu University, Varanasi

Former Professor, Banaras Hindu University, Varanasi-221 005

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Published

2009-09-01

How to Cite

Datta, S. K., Kumar, L., & Basu, B. N. (2009). Analysis of Dielectric Loss in a Helix Slow-wave Structure. Defence Science Journal, 59(5), 549–552. https://doi.org/10.14429/dsj.59.1558

Issue

Section

Short Communication