Detail Information

A tapered ridge-loaded folded waveguide slow-wave structure for millimeter-wave traveling-wave tube

Guo G., Wei Y., Yue L., Gong Y., Xu X., He J., Zhao G., Wang W., Park G.-S.
Journal of Infrared, Millimeter, and Terahertz Waves, 33, 131(2012)
DOI: 10.1007/s10762-011-9852-z

Abstract

This paper presents a tapered ridge-loaded folded waveguide (FWG) slow-wave structure (SWS) for broadband and high power millimeter wave traveling wave tube (TWT). The radio-frequency characteristics including dispersion properties, interaction impedance, S-parameters are analyzed. And based upon these results, the nonlinear large signal performance of the tapered ridge-loaded folded waveguide TWT working in W-band is simulated by 3-D particle-in-cell code. In the same ridge length, the tapered FWG has lower reflection and radio-frequency loss than the normal ridge-loaded FWG. Besides, the tapered ridge-loaded FWG TWT also has higher electron efficiency and larger bandwidth, which is more suitable for millimeter-wave TWT. © Springer Science+Business Media, LLC 2011.