Modified Tunneladder Slow-Wave Structures for High-Power Millimeter-Wave TWTs |
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| Authors: | HaiRong Yin Gong YuBin Wei YuanYu Lu ZhiGang Huang MingZhi Wang WenXiang |
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| Affiliation: | (1) National Key Laboratory of high-power microwave vacuum electronic devices, School of physical electronics, University of Electronic Science and Technology of China, North JianShe road, ChenDu, SiChuan, 610054, China |
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| Abstract: | In this paper, five modified Tunneladder slow-wave structures (SWS), the ridge-loaded stub-supported meander line with circular electron tunnel (CET-RSML), ring-plane frame line (RPFL), the ridge-loaded thick ladder line (RLTLL), the ridge-loaded pole-piece folded-waveguide circuit (RLPFWL), and the double-period Tunneladder line (DPTL) were discussed. The dispersion characteristics and the interaction impedances of the five modified Tunneladder SWS were calculated by simulation and the corresponding analytic models. The calculation results explain that the CET-RSML and the RLTLL hold wider bandwidth in comparison with the Tunneladder, when the volume dimensional lengths are same. When the bandwidth is definite, the interaction impedance of RLTLL can be higher than Tunneladder, but that of CET-RSML can’t. The dispersion curves of the RLPFWL and the DPTL are more linear in comparison with Tunneladder, but the interaction impedances are very low. Supported by the National Natural Science Foundation of China, under Grant No. 60532010. |
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| Keywords: | Tunneladder Millimeter-wave Numerical simulation Traveling wave tubes (TWT) |
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