摘要:
同轴辐射相对论磁控管,又称具有衍射输出的相对论磁控管,是目前相对论磁控管在小型化和紧凑化方向发展的重要分支,也是有望成为最紧凑的窄带高功率微波源器件之一.根据同轴辐射相对论磁控管直接轴向辐射准TEll模式的方式和特点,开展了两路同轴辐射相对论磁控管共用一个喇叭的功率合成研究.通过对平行排列结果的分析讨论,提出了一种改善辐射方向性的方法和结构.最终的研究结果表明：当两路同轴辐射相对论磁控管并排靠近放置且夹角为7°,共用喇叭的参数为h=600 mm,r=340 mm时,π模反射系数为0.31,最大增益21.5 dB,辐射模式为TEll模.
Abstract:
The relativistic magnetron with axial extraction,also known as magnetron with diffraction output（MDO）,is an important device for the miniaturization and compaetification of magnetron.It is also promising to be one of the most compact narrow band high power microwave sources.Based on the manners and traits of the MDO directly radiating the quasi-TE11 mode in axial direction,the investigation of the power combination of double MDOs with a horn antenna is carried out.After discussing the combination ways and results,a modified configuration is proposed for improving the radiation directivity.Finally,the results show that when the adjacent double MDOs have an open angle of 7°and the common horn antenna has the parameters of h = 600 mm and r = 340 mm,theπmode reflection coefficient of the power combination system is 0.31,the maximum gain is 21.5 dB,the radiation mode is TE11.
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