红外与毫米波学报2020，Vol.39Issue(2)：157-162,6.DOI:10.11972/j.issn.1001-9014.2020.02.004
W波段带状注耦合腔慢波结构行波管的设计与冷测
Design and cold-test of sheet beam coupled cavity slow wave structure for W-Band TWT
摘要
Abstract
This paper presents the fabrication and cold-test of a three-slot-staggered-ladder coupled cavity slowwave structure(CC-SWS)along with high power input-output couplers and RF windows in W-band. The SWS is fed by a rectangular waveguide coupler which is made up of a three-order step-transform rectangular waveguide placed on the short edge of the input cavity. Firstly,the dispersion,interaction impedance,transmission property and beam-wave interaction are studied using the simulation method. It is shown that the traveling wave tube (TWT)with a three-slot-staggered-ladder CC-SWS is able to provide a saturation output power of more than 1000 W in the frequency range of 91～96 GHz,and the maximum saturated output power can reach 1125 W at 94 GHz. Secondly,the CC-SWS is fabricated by the high-precision CNC milling and fixed in a nonmagnetic stainless steel housing. Test results of the fabricated CC-SWS with couplers and RF-windows are presented,showing the S11<-10 dB in the frequency range of 90 GHz to 100 GHz. Therefore,the three-slot-staggered-ladder CC-SWS is a promising slow wave circuit of high power W-band TWT.关键词
行波管/W波段/三槽梯形/耦合腔慢波结构/冷测Key words
traveling wave tube/W-band/three-slot-staggered-ladder/coupled cavity slow wave structure(CC-SWS)/cold test分类
信息技术与安全科学引用本文复制引用
路志刚,葛卫华,温瑞东,苏志成,朱美玲,丁科森,王战亮,唐涛..W波段带状注耦合腔慢波结构行波管的设计与冷测[J].红外与毫米波学报,2020,39(2):157-162,6.基金项目
Supported by the Key Laboratory Foundation (614280701020117),China Postdoctoral Science Foundation(2017M62299) （614280701020117）
