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回旋管准光辐射器研究与设计

Keywords: 回旋管 准光辐射器 几何光学 耦合波理论

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Abstract:

准光辐射器是高功率回旋管准光模式变换器的重要组成部分.采用几何光学理论分析圆波导准光辐射器, 根据高斯波束(TEM00模)在辐射器切口处形成的原因, 利用耦合波理论设计波纹波导准光辐射器.通过编写程序并进行数值优化完成140GHz、TE28,8模式回旋管波纹波导准光辐射器的设计, 结果表明波纹波导辐射器的总长度仅为205.2mm, 切口长度为47.2mm, 在辐射器螺旋切口Brillouin区内高斯模式标量相关系数大于98%.本文所用的方法也可用于其它频率和模式的回旋管准光辐射器设计

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