| 微波孔缝线性耦合函数研究 |
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| 引用本文： | 刘小龙,刘国治,汪文秉. 微波孔缝线性耦合函数研究[J]. 强激光与粒子束, 2003, 15(11): 0-1129 |
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| 作者姓名： | 刘小龙 刘国治 汪文秉 |
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| 作者单位： | 1.西北核技术研究所,陕西 西安 71 0024; |
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| 基金项目： | 国家863计划项目资助课题 |
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| 摘 要： | 讨论了微波脉冲通过孔缝线性耦合进入腔体内的研究方法。给出了线性耦合的物理基础,定义了耦合函数，并导出了耦合函数随入射电场极化方向变化的公式。简要描述了数值求解孔缝线性耦合的时域有限差分方法以及修正算法。给出了以矢量网络分析仪HP8510C为主要设备测量耦合函数的实验方法。通过耦合函数的研究，观察到了共振效应和增强效应等现象，给出了微波孔缝耦合发生共振的普适公式。分析了测量探头对耦合函数测量的影响，验证了耦合函数随入射电场方向变化的公式。理论、数值和实验结果符合得较好。
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| 关 键 词： | 波脉冲 线性耦合 耦合函数 时域有限差分 孔缝 共振效应 增强效应 |
| 文章编号： | 1001-4322(2003)11-1127-03 |
| 收稿时间： | 2003-05-21 |
| 修稿时间： | 2003-05-21 |
Radiant characteristics of TEM horn with constant impedance |
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| liu xiao long,liu guo zhi,wang wen bing. Radiant characteristics of TEM horn with constant impedance[J]. High Power Laser and Particle Beams, 2003, 15(11): 0-1129 |
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| Authors: | liu xiao long liu guo zhi wang wen bing |
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| Affiliation: | 1.Northwest Institute of Nuclear Technology,P.O.Box 69 15,Xi'an 710024,China;2.Department of Physics,Xidian University,Xi'an 710071,China |
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| Abstract: | In this paper, the radiation characteristics of constant impedance TEM horn of various geometrical structures are calculated. In each calculation, peak to peak value of axial electric field obtained from an equivalent ideal aperture is used to normalize electric fields along axial of practical antennas. The specific value is defined as feeding coefficients and then applied to determine how the radiation properties of the horns can be affected if the horn structure is adjusted. These results provide a basis to design and fabricate practical ultra wideband antenna. |
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| Keywords: | Ultra-wideband TEM horn Antenna Finite-difference time domain method |
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