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| Explanation of Slowly Decreasing Wave in Frequency Domain |
| Jin Long; Ruan Cheng-li |
| College of Physical Electronics UEST of China Chengdu 610054 China |
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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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Received: 14 October 2003
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2005, Vol. 27 
