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The traveling wave tube is one of the most important devices in electric vacuum devices , has the characteristics of wide bandwidth, high gain , high power , and has been widely used in many electronic fields . In order to increase bandwidth , improve its output power , many experts and scholars have made unremitting efforts , such as improved analytical methods and means to optimize the structural model , and process . However , for a certain kind of traveling wave tube slow wave structure , determine its slow wave structure , the basic performance parameters to determine the basic performance space on the basis of existing . To this end, the overall performance of the lift traveling wave tube , the innovative new slow-wave structure , from the theoretical analysis , simulation and experiments verified . This thesis in this context , concluding predecessors experts and scholars on the theory and methods , a new spiral vane-loaded helix slow wave structure and a preliminary study of the structural model , the paper work as follows: an overview of the development of the traveling wave tube , and summarizes the problems and challenges faced to improve the performance of broadband high power traveling wave tube . Second, proposes a new spiral vane-loaded helix slow-wave structure , through the theoretical analysis of a simplified model derived the equations of the electromagnetic field in the slow-wave structure , dispersion equations and boundary conditions ; different sizes from the numerical simulation method slow-wave structure to simulate and analyze the dispersion characteristics and coupling impedance . Third, the slow-wave structure Note - wave interaction of three-dimensional particle simulation analysis to verify the result of the slow-wave structure in the the added electron beam output power , gain , efficiency . Theoretical analysis and numerical calculation , this new type of slow-wave structure and the traditional wing loaded helix slow wave structure heat , two slow - wave structure and more heat compared , the results show that the new type of slow-wave structure performance improvement in heat dissipation , output power and system stability .
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