基片集成波导馈电的电磁互补偶极子天线研究
以往的电磁互补偶极子天线立体结构较大，不易平面集成和组成阵列，采用SIW馈电后可有效解决以上问题。本文设计的这款天线相对阻抗带宽为33.3%，中心频率处增益为7dB，半功率波瓣宽度达到了86°，整个工作频段内增益稳定。8792
关键词 矩形波导 基片集成波导 电磁互补偶极子 天线
毕业设计论文外文摘要
Title A Study Based on Substrate Integrated Waveguide-Fed Magneto-electric Dipole Antenna
Abstract
The rectangular waveguide structure, as we know, has advantages over other planar transmission lines for millimeter band applications, but its implementation in planar form seems to be difficult due to its 3D geometry. This difficulty was resolved a few years ago by the proposed substrate integrated waveguide (SIW). It is an artificial waveguide structure that is fabricated in planar substrate with periodic metallic cylinders, and preserves much of the properties of a conventional rectangular waveguide (RW). Substrate integrated waveguides have clear advantages over RWG including low cost, simple integration with planar devices, and a significant size reduction.
Previous magneto-electric dipole antenna has a large three-dimensional structure.So it is difficult to integrate with planar circuits and system or be composed of arrays.However SIW-fed can effectively solve the above problem. In this paper the design of this antenna has a relative impedance bandwidth of 33.3%. The gain of center frequency can reach 7dB. The half-power beam width can reach 86°. Over the operating frequency range
it has a stable gain.
Keywords Rectangular waveguide Substrate integrated waveguide（SIW）
Magneto-electric dipole Antenna目 次
1 绪论 1
1.1 引言 1
1.2 偶极子天线的研究现状 2
1.3 本课题方案的提出 3
1.4 本论文的主要工作及框架 4
2 电磁互补偶极子天线的基本理论以及实例 5
2.1 天线基础知识 5
2.2 电磁互补偶极子天线的基本原理和分析方法 6
2.2.1 偶极子天线 6
2.2.2 电磁互补偶极子原理 8
2.3 电磁互补偶极子天线应用实例 9
3 基片集成波导（SIW） 12
3.1 SIW结构出现的背景 12
3.2 SIW与常规矩形波导的等效 13
3.2.1 矩形波导 13
3.2.2 SIW与矩形波导对比 15
3.3 SIW传输特性 17
3.4 SIW结构与外部平面电路的过渡 19
4 基片集成波导馈电的电磁互补偶极子天线的整体结构 23
4.1 基本原理 23