| 开关激励宽谱电磁脉冲谐振器频域响应特性 |
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| 引用本文： | 徐刚,谢平,廖勇,张晋琪,杨周炳,孟凡宝.开关激励宽谱电磁脉冲谐振器频域响应特性[J].强激光与粒子束,2013,25(9):2363-2367. |
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| 作者姓名： | 徐刚 谢平 廖勇 张晋琪 杨周炳 孟凡宝 |
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| 作者单位： | 1.中国工程物理研究院 应用电子学研究所, 高功率微波技术重点实验室, 四川 绵阳 621 900 |
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| 摘 要： | 开关激励的同轴/4谐振器是产生宽谱高功率电磁脉冲的主要方式之一，采用冲击脉冲方法分析了带耦合器输出的宽带脉冲谐振器频域响应特性。首先推导了频域响应特性与耦合器耦合系数之间的关系，并得到了产生脉冲的带宽表达式，利用Taguchi算法优化设计了宽带耦合器，使其在200~500 MHz的耦合系数S21接近0.6，之后利用轴对称的柱坐标2D-FDTD对带耦合器的宽带脉冲谐振器工作过程进行了模拟，对于不同的谐振长度，可产生200~500 MHz中心频率的宽带脉冲，其频谱和带宽与理论结果吻合较好。
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| 关 键 词： | 宽带脉冲 同轴谐振器 频域响应 耦合器 时域有限差分 |
| 收稿时间： | 2012-10-27 |
Frequency response of switched high power mesoband electromagnetic pulse generator |
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| Affiliation: | 1.Science and Technology on High Power Microwave Laboratory,Institute of Applied Electronics,CAEP,P.O.Box,919-1015,Mianyang 621900,China |
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| Abstract: | The switched /4 coaxial oscillator is used to generate high power mesoband electromagnetic pulse, the frequency response character of a coupled-output mesoband oscillator was analyzed using impulse response method. Firstly we derived the response function of the oscillator analytically, the percent bandwidth of the output pulse against the couple coefficient of the coupler was obtained as well. A coupler with nearly constant couple coefficient of 0.6 at 200-500 MHz was optimized by Taguchi method, then simulation of the oscillator working processing was performed using axial symmetric 2-D FDTD method, and the simulated frequency spectrum and bandwidth matched well with the theoretical results. |
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