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Accurate Analyses of the On-Axis Fields of a Circular Disk by Transient and Harmonic Excitation |
| ZHU Xian-yang1;LI Jing1;REN Lang1;WANG Wen-bing2 |
| 1Institute of Electromagnetic Theory and Microwave Technology,
Southwest Jiaotong University, Chengdu 610031
2Institute of Electronics and Information, Xi an Jiaotong University, Xian 710049
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| Cite this article: |
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ZHU Xian-yang, LI Jing, REN Lang et al 1997 Chin. Phys. Lett. 14 173-175 |
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Abstract The computation of near zone fields is very important in many practical applications. Accurate analyses of the on-axis fields of a circular disk by transient and harmonic excitation show that there is an energy uprising zone on the axis rather than a non-decaying one, provided that the disk is excited by a rectangular pulse, the duration of which is less than the ratio of the radius to the light velocity. Similar results corresponding to the time-harmonic excitation are also given, which are quite different from the conclusions derived by Silver.
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| Keywords:
41.20.-q
41.20.Jb
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Published: 01 March 1997
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| PACS: |
41.20.-q
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(Applied classical electromagnetism)
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41.20.Jb
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(Electromagnetic wave propagation; radiowave propagation)
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