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Multiple beam traveling wave tubes (MB-TWTs) are attractive novel devices with enhanced power-bandwidth characteristics1. However, they are more vulnerable to spurious oscillations than single beam TWTs. Therefore, design codes for MB-TWTs should be capable of accurate prediction of MB-TWT operation in steady-state regime as well as prediction of spurious oscillations onset for different modes. Complexity...
Rapid but accurate 2D modeling of vacuum electronic devices today makes use of so-called hybrid codes1,2. These codes owe their computational efficiency to the fact that the properties of the slow-wave structures can be pre-calculated, and then fed to a beam wave interaction code, which calculates electron trajectories and self-fields in the beam-tunnel. While this approach has been successful (these...
Travelling Wave Tubes (TWTs) with slow-wave structures, based on a serpentine or folded waveguides, are promising devices for operation at sub-Terahertz and Terahertz frequency ranges. Development of such types of TWTs requires accurate and efficient computational tools suitable for their design, analysis and optimization. Recently we have developed the new model1, which allows us to extend an existed...
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