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摘要基片集成波导的出现颠覆了人们对传统波导的认识，使传统波导的立体结构等效于由介质基板上的金属化通孔形成的平面化的波导结构，保留了波导高Q值、高功率容量的特点，也让其更易于批量生产和平面集成。本文首先介绍了基片集成波导的概念及特点，及其发展现状。然后从理论上详细分析了基片集成波导的辐射特性，指出了基片集成波导与介质填充矩形波导的等效模型，以及用于仿真计算的两种波导上的纵向单缝模型，即终端短路的模型和两端开路的模型；基于这两种模型，推导了基于HFSS仿真的基片集成波导的归一化谐振导纳的计算公式。最后，运用HFSS电磁仿真软件对两种模型进行仿真，得到与理论相符的仿真结果，并对结果进行了分析和比较。60931
毕业论文关键词 基片集成波导 单个纵向缝隙 等效模型 辐射特性
毕业设计说明书（论文）外文摘要
Title Study on the radiation characteristics of a single longitudinal slot on substrate integrated waveguide
Abstract
The emergence of substrate integrated waveguide（SIW） emergence completely changes people’s understanding of the traditional waveguides, which makes the three-dimensional structure of traditional waveguide be equivalent to the plane structure formed by metal plated-through holes on the dielectric substrates. That not only retains the high Q value, high-power capacity and some other characteristics of rectangle waveguide, but also allows SIW easier to mass production and planar integrated. Above all, this paper curtly introduces the concept and characteristics of substrate integrated waveguide, and the development status of SIW. Then I theoretically analyze radiation characteristics of a single longitudinal slot on SIW in detail, pointing out the equivalent model between SIW and rectangular waveguide filled with dielectric, as well as the two models of a single longitudinal slot on waveguides for simulation, namely one terminal short circuit model and two terminals open circuit model; on the basis of there two models, I derive the computing formula of normalized admittance resonance of SIW based on HFSS simulation, short a port terminal model and ends open the two port model; based on these two models are derived based on HFSS simulation substrate integrated waveguide normalized admittance resonance formula. At last, the electromagnetic simulation software HFSS was used on both the models, the simulation solutions squared with the theory obtained, and the results were analyzed and compared.
Keywords substrate integrated waveguide single longitudinal slot equivalent model radiation characteristics
1 引言 1
2 基片集成波导简介 1
2.1 基片集成波导的概念及特点 1
2.2 基片集成波导的发展现状 2
3 基片集成波导单个纵向缝隙的辐射特性 3
3.1 基片集成波导与介质填充波导的等效 3
3.2 基片集成波导单个纵向缝隙的辐射特性 4
3.3 基片集成波导缝隙的特性参数 7
3.4 基片厚度对基片集成波导缝隙的影响 10
4 基片集成波导单个纵向缝隙的HFSS仿真 10
4.1 基片集成波导单个纵向缝隙的建模 10
4.2 缝隙特性参数的计算 21
4.3 一端口模型与二端口模型的比较 24
结论 25
致谢 26
参考文献27
1 引言
在当今信息化和网络化的社会中，无线通信技术的飞速发展是有目共睹的。无线通信技术让现代人的生活发生了天翻地覆的改变，人与人之间的距离被大大地缩短，联系越来越密切，对无线通信的需求也呈现出明显的上升趋势。巨大的市场潜力让全球的电信企业都将目光投向了无线通信，尤其是个人通信，在激烈的市场竞争中不断推陈出新。而各种不同规格的产品为了适应多样化功能的需要，必须依靠不同特性的硬件来满足系统的要求，微波器件是无线通信系统中不容忽视的一个部分。以天线为例，天线的种类随着制造工艺和技术的发展而趋于多元，如定向天线、全向天线、双极化天线、螺旋天线、宽频带天线等；在天线的性能和外观上也趋于完善，如体积减小、重量减轻、成本降低、易于加工、集成度高等。越来越多性能优良的微波器件受到了市场的肯定，而对于微波器件的研究仍然是无线通信领域的热点。