红外与毫米波学报2018，Vol.37Issue(3)：269-274,6.DOI:10.11972/j.issn.1001-9014.2018.03.003
适用于Ka波段圆形电子注行波管的半圆形卷绕微带线慢波结构
Semi-circularly folded microstrip meander line slow-wave structure for Ka-band traveling-wave tube with cylindrical electron beam
摘要
Abstract
A folded microstrip meander line ( FMML) slow-wave structure ( SWS) based on slotted dielectric sub-strate is proposed.Due to the metal meander line printed in a semi-circular slot of the dielectric substrate, the pro-posed FMML SWS is very suitable for traveling-wave tubes ( TWT) with cylindrical electron beam ( CEB) , which can be focused by a traditional periodic permanent ( PPM) magnetic focusing system.The analyses of dispersion characteristics, coupling impedances, transmission properties and particle-in-cell ( PIC) of the proposed FMML SWS are investigated.Compared with traditional planar microstrip meander line ( PMML) SWS, the FMML SWS has the advantages of lower phase velocities, weaker dispersion and higher coupling impedances, which make the FMML SWS suitable for developing low-voltage, wideband and miniature millimeter-wave TWTs.With a focus magnetic of only 0.4 T, a Ka band TWT with the FMML SWS is capable of delivering 42.32 W output power with a corresponding gain of 26.26 dB at 35 GHz, while the voltage and the current of the electron beam are set to be 6550 V and 0.1 A, respectively.关键词
电子物理学/卷绕微带线/计算机仿真/慢波结构/行波管Key words
Electron physics/folded microstrip meander line (FMML)/computer simulation/slow wave struc-ture ( SWS)/traveling wave tubes ( TWT) .分类
数理科学引用本文复制引用
丁冲,李倩,雷霞,吴钢雄,杨睿超,宫玉彬,王文祥,魏彦玉..适用于Ka波段圆形电子注行波管的半圆形卷绕微带线慢波结构[J].红外与毫米波学报,2018,37(3):269-274,6.基金项目
Supported by the National Program on Key Basic Research Project of China (613233) and the National Natural Science Foundation of China (61771117, 61531010, 61271029) （613233）
