强激光与粒子束, 2018, 30 (6): 063003, 网络出版: 2018-06-12  

圆波导TE01模激励器设计及实验研究

Investigations on TE01 circular waveguide mode transducer
作者单位
1 国防科技大学 前沿交叉学科学院, 长沙 410073
2 中国人民解放军75836部队, 广州 510000
摘要
对比分析了几种可输出圆波导TE01模激励器的仿真设计结果。结果表明, 利用行波功分结构实现矩形波导TE10模到4路矩形波导TE10模的等幅同相功分, 进而合成转换成圆波导TE01模的转换过程, 可在较宽的频带范围内, 实现圆波导TE01模的高效激励。以中心频率9.40 GHz仿真设计的圆波导TE01模激励器, 在中心频率上的传输效率超过99.9%; 在9.08~9.61 GHz的频率范围内, 传输效率大于99%。实验测量结果表明, 所加工激励器在较宽的频带范围内, 传输损耗优于-0.2 dB, 与仿真结果的差异主要来自于波导壁面的欧姆损耗和波同转换结构; 器件工作频带内平坦特性良好, 有利于开展测量工作。
Abstract
The design methodologies, numerical results for TE01 circular waveguide mode transducer were reported. It is shown that, TE01 circular waveguide mode can realize high transmission efficiency in a wide band by utilizing travelling wave power divide structures, realizing TE10 rectangular waveguide mode divided into four TE10 rectangular waveguide modes, and then combining to a TE01 circular waveguide mode. The optimized transducer has a transmission efficiency of over 99.9% at 9.40 GHz, and exceeds 99.0% in the range of 9.08-9.61 GHz. Experimental results show that the transmission loss is less than -0.2 dB, which is mainly caused by waveguide ohmic loss and waveguide-coaxial adapter. However, the results also have verified the feasibility of the manufactured transducer.

张强, 袁成卫, 陈俊, 余龙舟, 赵雪龙. 圆波导TE01模激励器设计及实验研究[J]. 强激光与粒子束, 2018, 30(6): 063003. Zhang Qiang, Yuan Chengwei, Chen Jun, Yu Longzhou, Zhao Xuelong. Investigations on TE01 circular waveguide mode transducer[J]. High Power Laser and Particle Beams, 2018, 30(6): 063003.

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