摘要随着雷达技术的进步，频率调制连续波（FMCW）技术已经广泛用于车载的多普勒雷达中。对于汽车的目标定位而言，频率扫描天线技术发挥着重要的作用。
本文提出了基片集成波导结构的频率扫描天线，包括串馈直线阵列的频率扫描天线和串馈蛇形慢波线结构的频率扫描天线。其中串馈直线阵列的频扫天线是通过提高填充介质的介电常数来减小阵间距，从而抑制栅瓣的产生，来提高波束扫描的角度。串馈蛇形慢波线结构的频率扫描天线是把基片集成波导做成蛇形慢波结构，有效地减小相邻天线辐射缝隙的间距，从而增大天线阵面的频扫范围。28848
此外，本文又设计出一种基片集成波导——微带线过渡结构，从而方便和电气接口连接。
毕业论文关键词 频率扫描天线 行波阵 驻波阵 蛇形慢波线 基片集成波导
毕业设计说明书外文摘要
Title The Research Of Substrate Integrated Waveguide Frequency Scanning Antenna
Abstract
With the development of the radar technology, the frequency modulated continuous wave (FMCW) technique has been widely employed for Doppler radar in the automotive application. Determining the targets’ exact locations is very important，so the frequency scanning antenna is important for the automotive application.
The substrate integrated waveguide (SIW) frequency scanning antenna is proposed in this paper included the series-fed linear frequency scanning antenna array and the series-fed serpentine slow-wave frequency scanning antenna array. The series-fed linear frequency scanning antenna array reduce the grating lobe by increasing the dielectric constant to achieve the frequency scanning function. The series-fed serpentine slow-wave frequency scanning antenna array can reduce the spacing between adjacent antenna radiation slots effectively. What’s more, this antenna can enhance the scanning range by increasing the spacing of adjacent slits feeder.
In addition, this paper design a substrate integrated waveguide - microstrip transition structure to facilitate the measurements of this frequency scanning antenna.
Keywords frequency scanning antenna, line wavefront, standing front, serpentine SWS line, substrate integrated waveguide (SIW)
目 次
1 绪论 1
1.1 研究背景 1
1.2 国内外研究现状 1
1.3 主要研究工作及论文安排 2
2 频率扫描天线理论 3
2.1 频率扫描天线基本原理 3
2.2 频率扫描天线阵的基本参数 6
2.3 频扫天线的设计参数 7
2.4 慢波线结构 8
2.5 面 直角弯头 9
2.6 本章小结 10
3 波导缝隙天线阵列基本原理 11
3.1 波导缝隙的等效电路 11
3.2 缝隙天线阵 13
3.2.1 驻波阵 13
3.2.2 行波阵 14
3.3 本章小结..15
4 基片集成波导技术理论..16
4.1 基片集成波导基本原理 16
4.2 基片集成波导——微带线过渡结构 17
4.2.1 基片集成波导——微带过渡结构的设计原理 18
4.2.2 共面渐变式基片集成波导——微带线过渡结构 20 SIW频率扫描天线研究:http://www.751com.cn/tongxin/lunwen_23847.html