| [1] | Booske J H, Dobbs R J, Joye C D, et al. Vacuum electronic high power terahertz sources[J]. IEEE Transactions on Terahertz Science and Technology,2011,1(1):54−75 doi: 10.1109/TTHZ.2011.2151610 |
| [2] | Chong C K, and Menninger W L. Latest advancements in high-power millimeter-wave helix TWTs[J]. IEEE Transactions on Plasma Science,2010,38(6):1227−1238 doi: 10.1109/TPS.2010.2041940 |
| [3] | Sengele S, Jiang H, Booske J H, et al. Microfabrication and characterization of a selectively metallized W-band meander-line TWT circuit[J]. IEEE Transactions on Electron Devices,2009,56(5):730−737 doi: 10.1109/TED.2009.2015416 |
| [4] | Gerum W, Malzahn P, Schneider K. 94-GHz TWT for military radar applications[J]. IEEE Transactions on Electron Devices,2001,48(1):72−73 doi: 10.1109/16.892170 |
| [5] | Theiss A J, Meadows C J, Freeman R, et al. High-average-power W-band TWT development[J]. IEEE transactions on plasma science,2010,38(6):1239−1243 doi: 10.1109/TPS.2010.2041794 |
| [6] | Zhang X, Feng J, Cai J, et al. Design and experimental study of W band pulsed TWT with 8-GHz bandwidth[J]. IEEE Transactions on Electron Devices,2017,64(12):5151−5156 doi: 10.1109/TED.2017.2766664 |
| [7] | Na Y H, Chung S W, Choi J J. Analysis of a broadband Q band folded waveguide traveling-wave tube[J]. IEEE transactions on plasma science,2002,30(3):1017−1023 doi: 10.1109/TPS.2002.801638 |
| [8] | Han S T, Jang K H, So J K, et al. Low-voltage operation of Ka-band folded waveguide traveling-wave tube[J]. IEEE transactions on plasma science,2004,32(1):60−66 doi: 10.1109/TPS.2004.823978 |
| [9] | Sharma R K, Grede A, Chaudhary S, et al. Design of folded waveguide slow-wave structure for W band TWT[J]. IEEE Transactions on Plasma Science,2014,42(10):3430−3436 doi: 10.1109/TPS.2014.2352267 |
| [10] | Wen Z, Luo J, Li Y, et al. Beam–wave resynchronization method of the nonperiodic meander line and folded-waveguide SWS for TWTs[J]. IEEE Transactions on Electron Devices,2021,69(2):763−770 |
| [11] | Wang J X, Barnett L R, Luhmann N C, et al. Electron beam transport analysis of W-band sheet beam klystron[J]. Physics of Plasmas,2010,17(4):043111 |