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Abstract

Traveling wave tube since its inception, is widely used in communication, radar, electronic warfare and other modern electronic devices. In order to improve the performance of the traveling wave tube, in the development process of the more than half a century, people from the principle, structure, process and materials were a lot of work, however, the gain and bandwidth of the traveling wave tube always there is not at the same time improve contradictions. In order to the TWT gain and bandwidth, it proposed a multi-beam traveling wave tube new traveling wave tube, which combines multi-injection electron beam technology, coupled cavity TWT bandwidth can be increased to improve the traveling wave tube performance. In this paper, the multi-beam traveling wave tube high-frequency slow-wave system with electronic focusing system calculations and studies. The main work can be divided into the following aspects: With large-scale electromagnetic analysis software CST-MWS calculation analysis of multi-beam traveling wave tube coupled cavity slow-wave structure of the intrinsic field distribution, dispersion characteristics and coupling impedance, while improving in the quasi-periodic The parameter sweep boundary conditions coupled-cavity slow-wave linear dispersion characteristics. Multi-beam traveling wave tube slow-wave system, change the slow-wave line parameters of the dispersion characteristics and coupling impedance. Second, the use of three-dimensional electromagnetic software CST-MAFIA on the distribution of the magnetic field in the periodic permanent magnet focusing system to calculate and analyze the similarities and differences between the magnetic field distribution within the different electronic injection channel. Were used to write your own macro particle simulation program and CST-MAFIA simulation and analysis of the movement of the electron beam in the periodic permanent magnet focusing system, particularly injecting more movement of the electron beam in periodic permanent magnetic focusing system calculated and research. Binomial multi-section impedance transformer cut Chebyshev multi-section impedance transformer research and simulation using CST-MWS given S-parameter and VSWR SWR, analyze them as line the advantages and disadvantages of traveling wave tube input output system the waveguide impedance matching device. Cut Chebyshev multi-section impedance transformer design of multi-beam traveling wave tube input output system, and CST-MWS its parameter optimization. Fourth, the use of three-dimensional electromagnetic software CST-MAFIA 3D particle solver preliminary simulation of the interaction of multi-beam traveling wave tube wave Note. By injecting more before the findings of the traveling wave tube slow-wave system and periodic permanent magnet focusing system, the integration of design, high-frequency system of multi-beam traveling wave tube wave Note interaction in the case of multi-note electronic note preliminary simulation , laid the groundwork for future studies.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Vacuum Electronics > Microwave tubes > Traveling-wave tube
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Multi- beam traveling wave tube high-frequency system

Abstract

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