投稿时间:2021-04-17  修订日期:2021-05-17  点此下载全文
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何腾龙 电子科技大学 电子科学与工程学院 610054
王少萌 电子科技大学 电子科学与工程学院 
李新义 南京三乐电子集团有限公司 
许 多 电子科技大学 电子科学与工程学院 
师凝洁 电子科技大学 电子科学与工程学院 
王禾欣 电子科技大学 电子科学与工程学院 
巩华荣 电子科技大学 电子科学与工程学院 
路志刚 电子科技大学 电子科学与工程学院 
王战亮 电子科技大学 电子科学与工程学院 
段兆云 电子科技大学 电子科学与工程学院 
宫玉彬 电子科技大学 电子科学与工程学院 610054
中文关键词:行波管  平面慢波结构  微带曲折线
Design and Test of a Low Voltage Suspended Dual-Microstrip Meander-Line Slow Wave Structure at Ka Band
Abstract:A suspended dual- microstrip meander-line (SDMML) slow wave structure (SWS) is proposed in this paper. It consists of a metal enclosure as well as a suspended dielectric substrate, on the upper and lower surfaces of which are two metal meander-lines. As there are two electron beam tunnels locating above and below the dielectric substrate, and the electromagnetic wave has symmetrical distribution, it is possible to use one electron beam in each tunnel to drive the electromagnetic wave for a higher output power. The high frequency characteristics and the beam-wave interaction results of the SDMML SWS have been investigated by using simulation software. The hot performances of this SWS show that for two identical sheet beams with a voltage of 2050 V and a current of 0.2 A, the SDMML SWS has a maximum gain of 26 dB at 36 GHz and 3-dB bandwidth of saturation power of 8 GHz. To verify the simulation result, a SDMML SWS is fabricated by using new fabrication methods including the magnetron sputtering electroplate and laser ablation. The measured reflection loss of the SDMML SWS is better than -10 dB. The transmission loss of the fabricated slow wave structure is analyzed and verified through simulation and experimental results.
keywords:Traveling  wave tube, planar  slow wave  structure, microstrip  meander-line
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