太赫兹FWG-TWT电子光学系统的数值模拟验证
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摘要
结合实验模型,对0.22 THz折叠波导行波管(FWG-TWT)的电子光学系统进行数值模拟验证。首先对电子枪的工作机制进行细致研究和仿真验证,然后对电子光学系统(包括电子枪和周期永磁聚焦结构两部分)进行一体化建模,结合实际,合理设置仿真模型的工作参数及边界条件等。分析影响电子注流通率的关键因素,调整结构参数和束流参数,提高电子注的直流流通率。
For 0.22 THz micro-electric vacuum Folded Waveguide Traveling Wave Tube(FWG-TWT) amplifier, the model of whole electronic optics system for experiment is simulated. First of all, electron gun's working mechanism is analyzed and verified by simulation. Then the whole electronic optics system(including electron gun and periodic permanent magnetic focusing structure) is modeled. Combined with actual experimental conditions, the operating parameters and boundary conditions of the whole electronic optics system are set up properly for simulation. The key factors influencing the passing rate of electron beam are analyzed, and the structural parameters and beam parameters of electronic optics system are adjusted to improve electron beam's DC passing rate.
For 0.22 THz micro-electric vacuum Folded Waveguide Traveling Wave Tube(FWG-TWT) amplifier, the model of whole electronic optics system for experiment is simulated. First of all, electron gun's working mechanism is analyzed and verified by simulation. Then the whole electronic optics system(including electron gun and periodic permanent magnetic focusing structure) is modeled. Combined with actual experimental conditions, the operating parameters and boundary conditions of the whole electronic optics system are set up properly for simulation. The key factors influencing the passing rate of electron beam are analyzed, and the structural parameters and beam parameters of electronic optics system are adjusted to improve electron beam's DC passing rate.
引文
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[11]王亚军,颜胜美,陈樟.0.22 THz宽带折叠波导慢波结构的设计[J].太赫兹科学与电子信息学报,2014,12(1):14-18.(WANG Yajun,YAN Shengmei,CHEN Zhang.Design of slow-wave structure for 0.22 THz broadband folded waveguide[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(1):14-18.)
[12]徐翱,周泉丰,阎磊,等.0.34 THz折叠波导行波管设计及流通管试验[J].太赫兹科学与电子信息学报,2014,12(2):153-157.(XU Ao,ZHOU Quanfeng,YAN Lei,et al.Design for 0.34 THz folded waveguide TWT and runner pipe experiment[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(2):153-157.)
[13]陈樟,王亚军.0.14 THz折叠波导行波管慢波结构设计与加工[J].太赫兹科学与电子信息学报,2011,9(3):300-302.(CHEN Zhang,WANG Yajun.Design and manufacture of 0.14 THz folded waveguide traveling wave tube slow wave structure[J].Journal of Terahertz Science and Electronic Information Technology,2011,9(3):300-302.)
[2]SRIVASTAVA A.Microfabricated terahertz vacuum electron devices:technology capabilities and performance overview[J].European Journal of Advances in Engineering and Technology,2015,2(8):54-64.
[3]TUCEK J C,BASTEN M A,GALLAGHER D A,et al.Testing of a 0.850 THz vacuum electronic power amplifier[C]//IEEE International Vacuum Electronics Conference.Paris,Franch:[s.n.],2013.DOI:10.1109/IVEC.2013.6571144.
[4]KREISCHER K E,TUCEK J C,BASTEN M A,et al.220 GHz power amplifier testing at Northrop Grumman[C]//IEEE International Vacuum Electronics Conference.Paris,Franch:[s.n.],2013.DOI:10.1109/IVEC.2013.6570961.
[5]TUCEK J C,BASTEN M A,GALLAGHER D A,et al.A 100 m W,0.670 THz power module[C]//IEEE International Vacuum Electronics Conference.Montery,USA:[s.n.],2012:31-32.
[6]王亚军,徐翱,颜胜美,等.微加工工艺误差对THz折叠波导行波管性能影响[J].太赫兹科学与电子信息学报,2015,13(2):179-183.(WANG Yajun,XU Ao,YAN Shengmei,et al.Effect of microfabrication process on terahertz folded waveguide TWT[J].Journal of Terahertz Science and Electronic Information Technology,2015,13(2):179-183.)
[7]周泉丰,徐翱,阎磊,等.0.22 THz折叠波导行波管设计[J].太赫兹科学与电子信息学报,2014,12(2):166-170.(ZHOU Quan Feng,XU Ao,YAN Lei,et al.Study of designing 0.22 THz folded waveguide traveling wave tubes[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(2):166-170.)
[8]GILMOUR A S.Principles of traveling wave tubes[M].Boston,USA:Artech House,1994.
[9]张芳,董烨,董志伟,等.微电真空折叠波导行波管放大器的电子枪设计[J].太赫兹科学与电子信息学报,2011,9(3):320-324.(ZHANG Fang,DONG Ye,DONG Zhiwei,et al.Design of electron gun for vacuum microelectronic FWG-TWT amplifier[J].Journal of Terahertz Science and Electronic Information Technology,2011,9(3):320-324.)
[10]张芳,董志伟.0.22 THz微电真空折叠波导行波管聚焦磁场的理论分析与仿真研究[J].太赫兹科学与电子信息学报,2013,11(4):522-526.(ZHANG Fang,DONG Zhiwei.Simulation of FWG-TWT’s focused magnetic system[J].Journal of Terahertz Science and Electronic Information Technology,2013,11(4):522-526.)
[11]王亚军,颜胜美,陈樟.0.22 THz宽带折叠波导慢波结构的设计[J].太赫兹科学与电子信息学报,2014,12(1):14-18.(WANG Yajun,YAN Shengmei,CHEN Zhang.Design of slow-wave structure for 0.22 THz broadband folded waveguide[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(1):14-18.)
[12]徐翱,周泉丰,阎磊,等.0.34 THz折叠波导行波管设计及流通管试验[J].太赫兹科学与电子信息学报,2014,12(2):153-157.(XU Ao,ZHOU Quanfeng,YAN Lei,et al.Design for 0.34 THz folded waveguide TWT and runner pipe experiment[J].Journal of Terahertz Science and Electronic Information Technology,2014,12(2):153-157.)
[13]陈樟,王亚军.0.14 THz折叠波导行波管慢波结构设计与加工[J].太赫兹科学与电子信息学报,2011,9(3):300-302.(CHEN Zhang,WANG Yajun.Design and manufacture of 0.14 THz folded waveguide traveling wave tube slow wave structure[J].Journal of Terahertz Science and Electronic Information Technology,2011,9(3):300-302.)