Slow-Wave Characteristics of a Frame–Rod Structure Based on Micro-Fabricated Technology for THz Vacuum Electron Devices
作者： Chengfang Fu , Bo Zhao , Yudong Yang , Yongfeng Ju , Dingli Yang
DOI: 10.1007/S10762-016-0309-2
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摘要: A simple equivalent circuit analysis of the frame–rod slow-wave structure (SWS) on dielectric substrates a traveling-wave tube (TWT) is developed, using quasi-TEM approximation approach for dispersion and coupling impedance characteristics structure. Moreover, obtained complex equation are numerically calculated. The calculation results by our theory method agree well with 3D EM simulation software HFSS. It shown that decreased; phase velocity reduced bandwidth becomes greater, while decreases after filling materials in SWS. In addition, comparison this rectangular helix counterpart made. As planar structure, has potential applications compact TWTs based micro-fabrication technology, which could be scaled to millimeter wave, even THz frequency.
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