| 瞬态电磁脉冲能量传输特性的物理实质 |
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| 引用本文： | 孙云卿,杨宏春.瞬态电磁脉冲能量传输特性的物理实质[J].电波科学学报,2010(2). |
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| 作者姓名： | 孙云卿 杨宏春 |
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| 作者单位： | 电子科技大学物理电子学院; |
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| 摘 要： | 根据矢量位方程,在均匀电流模型下,分别给出了圆形和方形单元天线轴线上电磁场分量的时域表达式以及能量密度的解析计算公式;用等腰梯形电脉冲给天线馈电,采用数值计算的方法分别绘出了圆形和方形天线轴线能量密度随距离的衰减曲线,瞬态电磁脉冲能量传输呈现三段式传输规律和慢衰减特性;通过对能量密度解析计算公式物理意义的讨论,给出了瞬态电磁脉冲慢衰减传输特性的物理实质解释;采用亚纳秒电子源给抛物面天线馈电,对抛物面天线轴线辐射电磁脉冲波形及能量作实验测试,实验测试结果与数值计算结果相符合。
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| 关 键 词： | 瞬态电磁脉冲 慢衰减特性 物理实质 实验验证 |
Physical essence of energy transmission characteristics of transient electromagnetic pulse |
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| SUN Yun-qing YANG Hong-chun.Physical essence of energy transmission characteristics of transient electromagnetic pulse[J].Chinese Journal of Radio Science,2010(2). |
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| Authors: | SUN Yun-qing YANG Hong-chun |
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| Affiliation: | SUN Yun-qing YANG Hong-chun(College of Physical Electronics,University of Electronic Science , Technology of China,Chengdu Sichuan 610054,China) |
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| Abstract: | According to the vector potential equation,analysis formula of axial field component and the energy density of electromagnetic pulse radiated by disk and planar square antenna were derived separately based on the uniform current distribution model.The curves of axial energy of round and square planar radiator were mapped by the numerical results of energy density formula under the condition of isosceles trapezoid.Transient electromagnetic pulse energy transmission present three-stage transfer rules and slow... |
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| Keywords: | transient electromagnetic pulse slow-decaying property physical essence experimental test |
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