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| 圆形隧道中被导电磁波传输衰减的频率特性 | |
| 引用本文： | 刘会丽,魏占永,孙继平.圆形隧道中被导电磁波传输衰减的频率特性[J].煤炭学报,2004,29(5):630-634. |
| 作者姓名： | 刘会丽 魏占永 孙继平 |
| 作者单位： | 1. 河北工业大学,理学院,天津,300130 2. 河北工业大学,电器研究所,天津,300130 3. 中国矿业大学(北京)信息工程研究所,北京,100083 |
| 摘 要： | 给出了波导波模方程、单线波模方程和双线波模方程，并莉用数值分析方法求解，得出有关结论，即单线波模由于受隧道壁影响在衰减频率特性曲线上出现了峰值点，双线波模的场基本上分布在两导线之间和周围较小的范围内，衰减率随频率单调增加． |
| 关 键 词： | 圆形遂道 被导电磁波 衰减 频率特性 |
| 文章编号： | 0253-9993(2004)05-0630-05 |
| 修稿时间： | 2003年10月14 |
Frequency characteristic of transmitted attenuation of guided electromagnetic waves in circular tunnel |
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| LIU Hui-li.Frequency characteristic of transmitted attenuation of guided electromagnetic waves in circular tunnel[J].Journal of China Coal Society,2004,29(5):630-634. | |
| Authors: | LIU Hui-li |
| Affiliation: | LIU Hui-li~ |
| Abstract: | Wave guide mode equation and monofilar mode equation and bifilar mode equation were expressed, and through numerical method the solutions of mode equation were obtained. The conclusions are that attenuations frequency characteristic curves of monofilar mode has peaks point owing to loss arose by tunnel wall, and that the field of bifilar mode distributes between line and line and at the little space around the lines, attenuations rate rises monotonously with the frequency increasing. |
| Keywords: | circular tunnel guided electromagnetic waves attenuations rate frequency characteristic |
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