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| 水平电偶极子在负折射媒质半空间激励的场 | |
| 引用本文： | 朱秀芹,潘威炎,官伯然.水平电偶极子在负折射媒质半空间激励的场[J].电波科学学报,2009,24(1). |
| 作者姓名： | 朱秀芹 潘威炎 官伯然 |
| 作者单位： | 1. 西安电子科技大学电子工程学院,陕西,西安,710071;中国电波传播研究所青岛研发中心,山东,青岛,266071 2. 中国电波传播研究所青岛研发中心,山东,青岛,266071 3. 杭州电子科技大学天线和微波技术研究所,浙江,杭州,310018 |
| 摘 要： | 讨论了水平电偶极子在由介电常数和磁导率都为负数的媒质和普通媒质构成的均匀半空间中激励的电磁场,并得出了远区场的解析表达式.理论分析和数值计算结果表明:位于普通介质中的水平电偶极子在普通媒质和负折射媒质分界面能够有效激励表面波.该表面渡是一种"慢波",沿分界面传播的波数小于波在两种均匀媒质中传播的波数.当两种介质均无损耗时,沿径向传播的幅度按波的几何扩散衰减.由于存在三种传播波数,表面波、侧面波、直达波和反射波共同作用形成的总场将发生复杂的干涉现象. |
| 关 键 词： | 负折射媒质 水平电偶极子 表面波 侧面波 |
Electromagnetic field generated by a horizontal electric dipole on double negative medium half space |
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| ZHU Xiu-qin,PAN Wei-yan,GUAN Bo-ran.Electromagnetic field generated by a horizontal electric dipole on double negative medium half space[J].Chinese Journal of Radio Science,2009,24(1). | |
| Authors: | ZHU Xiu-qin PAN Wei-yan GUAN Bo-ran |
| Institution: | ZHU Xiu-qin1,2 PAN Wei-yan2 GUAN Bo-ran3 |
| Abstract: | The electromagnetic field produced by a horizontal electric dipole over a double negative(NDG) medium half space is discussed,and the analytical expressions of the field which are convenient for calculation are derived.Based on the formulae and the calculation results,it can be concluded that the dipole on the configuration composed of the common medium and the DNG medium half space can excited the surface wave.The propagating wave-number of the surface wave is less than that in both the two medium,so that ... |
| Keywords: | double negative medium horizontal electric dipole surface wave lateral wave |
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