Effect of Helical Slow-Wave Structure Parameter Variations on TWT Cold-Test Characteristics

LI Shi; LIU Wei; SU Xiao-bao; YIN He-jun

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Effect of Helical Slow-Wave Structure Parameter Variations on TWT Cold-Test Characteristics

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- Effect of Helical Slow-Wave Structure Parameter Variations on TWT Cold-Test Characteristics
- Acta Electronica Sinica Vol. 32, Issue 9, Pages: 1511-1514(2004)
- 作者机构：
  
  中科院电子所微波器件中心,北京,100080
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN124
- Published Online：25 September 2004，
  
  Published：2004
- 稿件说明：
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LI Shi, LIU Wei, SU Xiao-bao, et al. Effect of Helical Slow-Wave Structure Parameter Variations on TWT Cold-Test Characteristics[J]. Acta Electronica Sinica, 2004, 32(9): 1511-1514.
DOI：

LI Shi, LIU Wei, SU Xiao-bao, et al. Effect of Helical Slow-Wave Structure Parameter Variations on TWT Cold-Test Characteristics[J]. Acta Electronica Sinica, 2004, 32(9): 1511-1514. DOI：

摘要

本文介绍了用MAFIA软件的准周期边界条件计算螺旋线行波管慢波结构的色散和耦合阻抗等冷测特性的方法

并重点对慢波结构中各参数

特别是矩形螺旋线截面的宽度和厚度对其冷测特性的影响进行了分析.这是目前理论上没有解决的难题.分析结果表明

螺旋线的宽度和厚度对其色散影响不大

而对耦合阻抗有一定影响.对耦合阻抗而言

螺旋带宽度和厚度都存在一个最佳值.

Abstract

The quasi-periodic boundary conditions in the computer code MAFIA is used to determine the effect on dispersion and on-axis interaction impedance of helical slow-wave structure parameter variations

including width

thickness and relative dielectric constant of the support rods.This is a difficult problem in theory now.The result is that

with the variations of axial width and height of the helical tape

only a slight decrease in the phase velocity

but more decrease in the interaction impedance .There is an optimum size on both axial width and height of the helical tape for the interaction impedance of a helical slow-wave structure.

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Related Institution

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