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(英)140GHz回旋行波管放大器准光学注入结构的设计

Keywords: 回旋行波挂放大器,准光学注入结构,功率耦合器

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Abstract:

作为140GHz共焦波导回旋行波管放大器设计中的一个创新部分,关于准光学注入结构的设计方法将详细论述.归因于高斯光束对频率扰动的欠敏感特性,这样的注入结构具有比传统波导插入耦合器更大的带宽.注入系统包括耦合天线、镜面变换器和波纹波导三个部分,最终在高于50%功率注入水平下达到6.8GHz的带宽,并克服了可能的寄生模式振荡和由加工误差导致的注入效率迅速下降的问题.

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