Publisher DOI: | 10.1109/TED.2018.2810501 | Title: | Magnetic Field Tapering Approaches for Backward-Wave Oscillation Suppression in Helix Traveling-Wave Tubes | Language: | English | Authors: | Hägermann, Moritz ![]() Birtel, Philip Meyne, Sascha Safi, Djamschid ![]() Jacob, Arne |
Issue Date: | Jun-2018 | Source: | IEEE Transactions on Electron Devices 6 (65): 2236-2242 (2018-06) | Abstract (english): | Two magnetic field tapering concepts for the suppression of backward-wave oscillations in helix traveling-wave tubes (TWTs) are presented. Therefore, the beam-wave interaction in a homogeneous helix section is modified. Increasing the field strength reduces the beam diameter and consequently the beam-wave coupling, while an additional offset in the focusing field alters the synchronism between both. The theoretical background is introduced and results from a 1-D small-signal and a 3-D particle-in-cell code are presented and compared. Furthermore, a concept to apply the suppression techniques to a complete TWT is presented, and the influence on the amplifier output characteristics is analyzed. |
URI: | http://hdl.handle.net/11420/2461 | ISSN: | 0018-9383 | Journal: | IEEE transactions on electron devices | Institute: | Hochfrequenztechnik E-3 | Document Type: | Article | Project: | Vollständig kaskadierte Simulation von schmalbandigen Phänomenen und Asymmtrien in Wanderfeldröhren |
Appears in Collections: | Publications without fulltext |
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