摘要高功率微波可以通过两种方式即“前门”耦合和“后门”耦合进入目标腔体内对电子设备产生影响。系统比较容易防护“前门” 耦合,但几乎不能完全消除“后门”耦合对系统的影响,这最主要威胁系统的正常工作。高功率微波通过“后门”进入目标系统的主要途径之一是孔缝耦合,这是高功率微波应用,高功率微波防护和高功率微波兼容研究的关键问题。65540
在本文中,基于时域有限差分方法的模拟软件CST,通过建立模型来研究高功率微波脉冲与腔体上孔缝的线性耦合问题。用耦合函数的概念研究不同形状,大小,数量的孔洞的情况。
在本文中,对高功率微波脉冲通过屏蔽体孔缝时的耦合特性进行了多方位分析,得出一些对屏蔽体的设计以及高功率微波脉冲防护有一定的参考价值的结论。
毕业论文关键词 高功率微波 孔缝 后门耦合
abstract
High-power microwave through the front door coupling and the "back door" into the target chamber coupled two ways to impact the electronic equipment. "Front door" coupling protection, "back door" coupling system almost can not completely eliminate, the most important threat to the normal operation of the system. Aperture coupling is one of the main high-power microwave through the "back door" into the target system is a key problem in electromagnetic pulse, electromagnetic protection and electromagnetic compatibility.
In this paper, based on the method of finite difference time domain simulation software CST as a tool, through the establishment of a model to study the problem of high-power microwave pulses on the hole of the cavity linear coupling joints. Shape, size, number of holes, with the coupling function of the type of concept study.
High-power microwave pulses by shielding through an aperture coupling characteristics analysis of multi-faceted, relevant conclusions on the design and electromagnetic protection shield certain reference value.
Key words high-power microwave aperture back door coupling system
目次
1 绪论 1
1.1 研究背景及意义 1
1.3 本文的研究目的 4
2 研究方法 9
2.1 方法概述 9
2.2 CST软件介绍 10
3 高功率脉冲与带孔缝腔体耦合特性的研究 12
3.1 脉冲概述 12
3.1.1 高斯脉冲 12
3.1.2 调制高斯脉冲 13
3.1.3 双指数脉冲 13
3.2 孔缝耦合的相关性质 14
3.2.1 不同形状孔缝的后门耦合分析 14
3.2.2对不同口径孔缝的后门耦合分析 22
3.2.3不同结构的同口径孔缝后门耦合分析 27
3.2.4 孔缝位置不同对耦合特性的影响 37
3.2.5 不同极化入射波的耦合 42
结论 49
致谢 51