Radio-Frequency Characteristics of the Coaxial Step-Disk-Loaded Slow-Wave Structure for Relativistic Travelling Wave Tubes |
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作者姓名: | 岳玲娜 王文祥 魏彦玉 宫玉彬 |
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作者单位: | NationalKeyLaboratoryofHighPowerVacuumElectronics,SchoolofPhysicalElectronics,UniversityofElectronicScienceandTechnologyofChina,Chengdu610054 |
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摘 要: | We present a new periodic all-metal slow wave structure, a coaxial step-disc-loaded system and the dispersion characteristics of the structure. By using the field-matching method, the dispersion equation and the coupling impedance of this structure are obtained. The coaxial structure makes the bandwidth broader than that of the non-coaxial one. Compared with the coaxial disc-loaded and ridged-disc-loaded structures, the pass-band of coaxial step-disc-loaded structure is the broadest. The calculation results show that increasing the step width and decreasing the step thickness can improve the bandwidth.
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关 键 词: | 电波频率 慢波结构 场匹配法 相对论性行进波管 |
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