慢衰减波的频域解释
Explanation of Slowly Decreasing Wave in Frequency Domain
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摘要: 采用频域传递函数的方法分析了圆盘辐射器的辐射特性，给出了轴线处的近远场电场、磁场和能量传播规律。采用定义了一个能量辐射因子的方法详细分析了时域电磁波的慢衰减原因。通过分析发现，其本质并没有任何异于时谐电磁波的地方，只是因为时域电磁波往往具有较宽的频带特性，其中高频成分的辐射能力要比低频强，从而表现出了所谓的慢衰减特性。通过分析频域的结果，使得时频域分析都能够获得一致的认识。
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关键词:
- 慢衰减波; 传递函数; 电磁导弹
Abstract: The character of radiation of disk radiator is analyzed with transfer function in frequency domain. Near or far field and law of energy propagation are presented at axes of disk. Time domain electromagnetic waves are analyzed in detail by defining a energy radiation parameter. The nature is the same as sinusoidal electromagnetic wave. They can decrease much more slowly because the radiating capacity of high frequency is better than the low, then coincident understand can be reached between them. -
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