High power over-moded circular waveguide to two-way rectangular waveguide power divider
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摘要: 基于模式匹配法分析了高功率过模圆波导到两路矩形波导功分器在传输过程中高阶模式的传输和反射问题,分析得到了高传输效率对过模圆波导的要求,并以此仿真设计了中心频率为2.88 GHz的功分器,设计结果表明:在中心频率下反射系数为0.05,对应的圆波导TM01模到矩形波导TE10模传输效率大于99%,真空中功率容量为2.83 GW;在2.82~2.94 GHz的频带范围内反射系数小于0.1,对应的传输效率大于98%。Abstract: Based on the mode matching method, the reflection and transmission problems of high order modes are analyzed in the high power over-mode circular waveguide to two-way rectangular waveguide power divider during transmission process. The requirement on the over-mode circular waveguide to realize high transmission efficiency is obtained. The power divider is designed at a center frequency 2.88 GHz. The result shows that at the center frequency, the reflection coefficient is about 0.05, the corresponding conversion efficiency of circular waveguide TM01 mode to rectangular waveguide TE10 mode is over 99%, and the power-handling capacity can reach 2.83 GW in vacuum state. In the frequency range of 2.82-2.94 GHz, the reflection coefficient is less than 0.1, and the corresponding transmission efficiency is more than 98%.
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Key words:
- high power microwave /
- power divider /
- over-moded /
- circular waveguide /
- rectangular waveguide
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