低过模高功率微波方圆模式转换器设计
Design of low over-moded high power microwave rectangular-circular mode converter
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摘要: 设计了一种结构简单的高功率微波方圆模式转换器，可以实现圆波导TM01模式与矩形波导TE10模式之间的相互转换。转换器工作在C波段，中心频率4.1 GHz，其输入端口和输出端口相互垂直。计算和仿真结果表明:中心频率处该模式转换器的转换效率可达99%，回波损耗小于-20 dB，转换效率大于90%的带宽大于0.2 GHz。转换器整体3维尺寸都只有10 cm左右。Abstract: A kind of high power microwave mode converter is designed, which is lowly over-moded with input and output wave-ports perpendicular to each other. The converter can convert TM01 mode in a circular waveguide to TE10 mode in a rectangular waveguide, and works in C-band with a central frequency of 4.1 GHz. The results of simulation show that the energy conversion efficiency of the mode converter is up to 99% at 4.1 GHz, and the return loss is less than -20 dB. The bandwidth in which the conversion efficiency exceeds 90% is larger than 0.2 GHz. Its dimension is about 10 cm in each direction.
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Key words:
- high power microwave /
- mode converter /
- rectangular waveguide /
- circular waveguide /
- te10 mode /
- tm01 mode
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