双微波源共轴辐射馈线结构的设计
Design of a coaxial radiation feeder structure applied to dual-band feed
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摘要: 设计了一种将两个不同波段微波源输出微波馈向同一个馈源喇叭的双波段馈线结构。该结构不仅对两个微波源输出的TM01模进行了有效的模式转换，而且实现了两个波段的微波共用辐射天线。采用双弯曲圆波导模式转换器实现高频段微波源输出微波的模式转换和轴线的定量平移；采用中间模式为矩形波导TE10模的圆波导TM01模-同轴波导TE11模的模式转换器，实现低频段微波源输出微波的模式转换及与高频段微波源输出微波的共轴输出。数值仿真结果验证了设计思路的正确性。Abstract: A novel dual-band feeder is investigated. The structure converts two TM01 modes from two separate non-coaxial microwave sources effectively, and coaxial radiation has been achieved. A dual-bend circular waveguide mode converter is designed with parallel axes of both input and output ports, realizing the conversion from TM10 to TE11 circular waveguide mode at high band. Another mode converter is designed to realize axes superposition of different radiation systems and mode conversion from TM011 to TE11 coaxial waveguide mode based on intermediate TE10 rectangular waveguide mode at low band. Simulations have verified the design.
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Key words:
- high power microwave /
- coaxial radiation /
- mode conversion /
- dual-band /
- waveguide /
- feed line
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