红外与毫米波学报2022，Vol.41Issue(2)：437-442,6.DOI:10.11972/j.issn.1001-9014.2022.02.009
Ka波段低电压悬置双微带曲折线慢波结构的设计与测试
Design and test of a low voltage suspended dual-microstrip meander-line slow wave structure at Ka band
摘要
Abstract
A suspended dual-microstrip meander-line(SDMML)slow wave structure(SWS)was proposed. 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 sub?strate,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 bet?ter than-10 dB. The transmission loss of the fabricated slow wave structure is analyzed and verified through simu?lation and experimental results.关键词
行波管/平面慢波结构/微带曲折线Key words
traveling wave tube/planar slow wave structure/microstrip meander-line分类
信息技术与安全科学引用本文复制引用
何腾龙,段兆云,宫玉彬,王少萌,李新义,许多,王禾欣,师凝洁,巩华荣,路志刚,王战亮..Ka波段低电压悬置双微带曲折线慢波结构的设计与测试[J].红外与毫米波学报,2022,41(2):437-442,6.基金项目
Supported by National Natural Science Foundation of China(61921002,61988102,92163204 and 62071087) （61921002,61988102,92163204 and 62071087）
