基于过模波导的高功率微波准相干功率合成器
X-band quasi-coherent power combiner based on overmoded waveguides for high power microwave
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摘要: 研究了一种用于功率合成的GW级高功率微波功率合成器。该合成器工作在X波段，输入微波由2路工作频率不同的X波段的微波源产生。为了满足输出功率和功率容量的要求，用于功率合成的微波源工作段波导的过模因子为12.7，这给功率合成器的设计带来了一定的困难。着重讨论了如何利用过模波导设计X波段高功率合成器，研究了如何抑制过模波导的高次模式并提高其功率容量和传输效率。设计的功率合成器单路传输效率达到99.0%以上，允许的最大输出功率达到5.6 GW以上，还可以按照需求适当增大高度，以进一步提高其功率容量而不影响传输效率。Abstract: A GW level high power combiner is investigated with theoretical analysis, numerical calculation and full wave simulation. The power combiner operates at X band, and is fed by two X-band microwave sources. To meet the requirements of power handling capacity, the overmoding ratio of the operating waveguide in the high microwave sources for combining is 12.7, which gives difficulties for the design of the combiner. This paper focuses on how to design the X band high power combiner based on overmoded waveguides, i.e., the methods for enhancing the transmission efficiency and power handling capacity, while suppressing the higher order modes. The designed power combiner has a power handing capacity higher than 5.6 GW, and its one-way transmission efficiency is above 99.0%. The power handling cap
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Key words:
- high power microwave /
- power combining /
- diplexer /
- overmoded /
- power handling capacity
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