脉冲波形对其轴线能量传播特性影响的研究
The study of axial energy decaying property influenced by pulse waveform
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摘要: 在相同平面圆形辐射器条件下，对具有相同中心频率的几种典型脉冲，根据电磁场理论，给出了它们轴线能量传播特性的解析计算公式和数字模拟结果。研究表明：当脉冲的上升时间小于有效脉冲宽度的1/20时，在脉冲传播的慢衰减区，等腰梯形脉冲的传播特性优于目前普遍应用的正弦脉冲。
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关键词:
- 脉冲波形; 传播特性; 中心频率
Abstract: With same circular radiating antenna, same center frequency pulse, the analytical and numerical results of axial energy of several typical waveform pulse are offered by electromagnetic theory. The results indicate: in the slow decaying area, the axial energy decaying property of isosceles trapezium electromagnetic wave pulse is better than that of sinusoidal electromagnetic waveform while its increasing time is shorter than one twentieth of the waveform width. -
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