用于非常高功率射频的平面波导混合

C. Nantista, W. R. Fowkes, N. Kroll, Sami G. Tantawi
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引用次数: 22

摘要

两种基本设计已经被开发出来,用于波导混合,或3db耦合器,能够在x波段处理数百兆瓦的功率。耦合是由一个或两个带h面结和匹配元件的连接波导提供的。在前一种情况下,连接波导支持两种模式。避免了小孔径和场增强e弯曲,以降低射频击穿的风险。h面对称也允许使用过度模矩形波导,其中的高度已经增加,以减少场振幅,而不影响散射矩阵。介绍了该系统的原理和设计,并给出了样机的功能和功率处理性能测试结果。这种装置是下一代线性对撞机(NLC)射频脉冲压缩或功率分配系统的组成部分,用于组合、分裂和定向功率。这项工作的动机是在常规和改进的magic-T中观察到200 MW以上功率水平的射频击穿。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Planar waveguide hybrids for very high power RF
Two basic designs have been developed for waveguide hybrids, or 3-dB couplers, capable of handling hundreds of megawatts at X-band. Coupling is provided by one or two connecting waveguides with h-plane junctions and matching elements. In the former case, the connecting waveguide supports two modes. Small apertures and field-enhancing e-bends are avoided to reduce the risk of RF breakdown. The h-plane symmetry also allows the use of over-moded rectangular waveguide in which the height has been increased to reduce field amplitudes without affecting the scattering matrix. The theory and designs are presented, along with the results of prototype tests of functionality and power-handling capability. Such a device is integral to the RF pulse compression or power distribution system of the Next Linear Collider (NLC) for combining, splitting, and directing power. This work was motivated by the observation of RF breakdown at power levels above 200 MW in conventional and modified magic-T's.
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