Lagrangian simulator for millimetre wave TWT based on non-rotationally symmetric slow wave structure

Robert Waring and Claudio Paoloni

Journal of Electromagnetic Waves and Applications, 2017, vol. 31, issue 17, 1902-1913

Abstract: A novel Lagrangian code for fast simulation of non-rotationally symmetric slow wave structure for millimetre wave Travelling wave tubes is proposed. Novel slow wave structures (SWS) suitable for fabrication at millimetre wave frequencies often have non-rotationally symmetric, differently from the helix that has a cylindrical symmetry. This prevents the use of conventional Lagrangian simulators valid for symmetric cylindrical symmetry. A modified Lagrangian simulator to simulate arbitrary symmetry SWS is proposed. The proposed simulator permits a very fast simulation of the large signal performance of the novel SWS, as the Double Corrugated Waveguide.

Date: 2017
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DOI: 10.1080/09205071.2017.1365629

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