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螺旋线慢波结构损耗特性研究 总被引:2,自引:0,他引:2
本文采用了与其他作者不同的理论模型和计算方法,对螺旋线慢波结构损耗准确的理论分析,考虑了介质夹持杆,管壳和螺旋线金属电导率对损耗的影响。在HP8510矢量网络分析仪上对两种结构的损耗进行了测量,并对螺旋线与能量耦合器之间的阻抗失配引起的误差进行了修正。理论结果与测量结果有较好的一致性。 相似文献
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针对行波管慢波结构热分析的必要性,介绍了螺旋线慢波结构的热产生机理,结合ANSYS软件设计了可对不同翼片加载和不同形状夹持杆的螺旋线慢波结构进行热特性分析的专用仿真环境。利用该仿真环境,用户可以在不掌握ANSYS软件的情况下对螺旋线行波管慢波结构的热特性进行模拟计算。 相似文献
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利用电阻温度系数法对几种方法制备的慢波组件散热性能进行了实验研究,结果表明石墨热挤压法、磁控溅射覆膜法及压力扩散焊接法和无变形热挤压法比冷弹压法和传统的缠钼带热挤压法制备的慢波组件散热性能强许多.传统的石墨热挤压法可与无变形热挤压法制备的组件的散热能力相比拟,但石墨热挤压法会引起慢波组件的两次变形,使慢波组件的微波反射点增多增强.压力扩散焊接法制备的慢波组件散热性能比溅射镀膜法制备的慢波组件散热性能稍强,但压力扩散焊接法与溅射镀膜法相比具有更低的微波损耗.这些结果为制备散热性能强的慢波组件提供了有益的实验结果. 相似文献
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Mukesh Kumar Alaria A. Bera A. K. Sinha V. Srivastava 《Journal of Infrared, Millimeter and Terahertz Waves》2009,30(3):211-216
This paper describes the analysis of helix slow-wave structure (SWS) for a high efficiency space traveling wave tube that
is carried out using Ansoft HFSS and CST microwave studio, which is a 3D electromagnetic field simulators. Two approaches
of simulating the dispersion and impedance characteristics of the helix slow wave structure have been discussed and compared
with measured results. The dispersion characteristic gives the information about axial propagation constant (Beta). Which
in turn yields the phase velocity at a particular frequency. The dispersion and impedance characteristics can be used in finding
the pertinent design parameters of the helix slow-wave structure. Therefore a new trend has been initiated at CEERI to use
Ansoft HFSS code to analysis of the helix slow wave structure in its real environment. The analysis of the helix SWS for Ku-band
140W space TWT has been carried out and compared with experimental results, and found is close agreement. 相似文献