A 2.5-D frequency-domain nonlinear computer model of coupled-cavity traveling wave tubes. Issue 5 (19th August 2014)

• Record Type: Journal Article
• Authors: Bai, Chunjiang; Hu, Yulu; Li, Jianqing; Sykulski, Jan
• Is Part Of: Compel. Volume 33:Issue 5(2014)
• Publication Date: 2014-08-19
• Subjects: Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-09-2012-0156
• Languages: English
• ISSNs: 0332-1649

Abstract

<abstract> <title> <x content-type="archive" xml:space="preserve">Abstract</x> </title> <sec sec-type="purpose"> <title>Purpose</title> <p>The paper aims to present a 2.5-dimensional (2.5-D) frequency-domain nonlinear computer model for the beam-wave interaction of coupled-cavity traveling wave tubes (CC-TWTs).</p> </sec> <sec sec-type="design|methodology|approach"> <title>Design/methodology/approach</title> <p>MKK (proposed by Malykhin, Konnov, and Komarov) equivalent circuit model is used to describe the coupled-cavity slow-wave structure. And the losses are taken into account in the MKK equivalent circuit. Instead of one-dimensional (1-D) disk model, the electron beam is divided into a set of discrete rays and the electron dynamics are treated using the three-dimensional (3-D) Lorentz force equations.</p> </sec> <sec sec-type="findings"> <title>Findings</title> <p>The simulated result obtained show that the computer model can give a good predict for coupled-cavity traveling wave tubes in V-band.</p> </sec> <sec sec-type="practical implications"> <title>Practical implications</title> <p> The computer model is capable of treating nonlinear problems. Compared with particle-in-cell (PIC) simulation, the 2.5-D frequency-domain computer model spends less time. Besides, the 3-D electron trajectory can be used to design high-efficiency collectors for coupled-cavity traveling wave tubes.</p> </sec> <sec sec-type="originality|value"> <title>Originality/value</title> <p>The computer model is able to simulate nonlinear problems of coupled-cavity TWT faster. </p> </sec> </abstract>