基于人工电磁材料的小型化功分器研究

发布时间：2018-04-22 02:21

本文选题：功分器 + 小型化　；参考：《电子科技大学》2015年硕士论文

【摘要】：近年来,随着无线通信系统的快速发展,对器件体积的小型化和系统的集成度都提出了更高的要求。首当其冲的就是要实现器件的小型化,这对于减少系统损耗,提高集成度都有很大帮助。随着人工电磁材料的提出,在实现小型化的技术方法上又多了一条途径。国内外学者也纷纷把目光聚焦在利用这一新技术实现小型化的器件设计。国内外已有学者利用人工电磁材料来实现小型化的功分器,主要对Wilkinson功分器的研究较多,但针对其他类型的功分器:如Gysel功分器和Bagley功分器的小型化研究较少。本文从Wilkinson功分器、Gysel功分器和Bagley功分器的设计理论出发,设计了基于人工电磁材料的小型化功分器,电路性能良好。首先,根据普通Wilkinson功分器的理论要求,设计了基于人工电磁材料的滤波型Wilkinson功分器,对谐振器进行了等效电路分析,并且对谐振器的相位也进行了分析。此外,基于Gysel功分器的电路理论和人工电磁材料传输线的相位超前性质,用人工电磁材料传输线代替Gysel功分器的相应传输线段,对传输线的相位和阻抗进行了理论分析,从而得到了一种小型化的Gysel功分器。然后,通过对Gysel功分器的180度线段进行双带变换器替换,从而成功设计出了小型化的双带Gysel功分器,对可以实现的频率比范围进行了分析,并且把这种设计方法和其他设计方法进行了对比。以上各个电路的测量结果均验证了其具有良好的性能和更小的尺寸。其次,提出了一种基于人工电磁材料的小型化的三路(可扩至奇数路)Bagley功分器,对新设计的功分器的工作原理进行了分析,对人工电磁材料传输线进行了相位和阻抗分析。基于小型化Bagley功分器的结构,采用基于人工电磁材料的小型化谐振器,设计了一种小型化的滤波型Bagley功分器。通过加工、实物测试,两个三路功分器电路都取得良好性能并且实现了小型化的目标。
[Abstract]:In recent years, with the rapid development of wireless communication system, the miniaturization of device volume and the integration of the system have put forward higher requirements. The most important thing is to realize the miniaturization of the device, which is helpful to reduce the system loss and improve the integration level. With the development of artificial electromagnetic materials, there is another way to realize miniaturization. Scholars at home and abroad have also focused on the use of this new technology to achieve miniaturization device design. Scholars at home and abroad have made use of artificial electromagnetic materials to realize miniaturized power dividers, mainly on the Wilkinson power divider, but for other types of power divider, such as Gysel power divider and Bagley power divider miniaturization research is less. Based on the design theory of Wilkinson power divider and Bagley power divider, a miniaturized power divider based on artificial electromagnetic material is designed in this paper. The circuit performance is good. Firstly, according to the theoretical requirements of the ordinary Wilkinson power divider, a filter type Wilkinson power divider based on artificial electromagnetic material is designed. The equivalent circuit of the resonator is analyzed, and the phase of the resonator is also analyzed. In addition, based on the circuit theory of Gysel power divider and the phase leading property of artificial electromagnetic material transmission line, the phase and impedance of transmission line are analyzed theoretically by replacing the corresponding transmission line segment of Gysel power divider with artificial electromagnetic material transmission line. Thus a miniaturized Gysel power divider is obtained. Then, by replacing the 180-degree line segment of Gysel power divider with dual-band converter, a miniaturized dual-band Gysel power divider is successfully designed, and the frequency ratio range that can be realized is analyzed. This design method is compared with other design methods. The measurement results of each circuit show that it has good performance and smaller size. Secondly, a miniaturized three-way power divider based on artificial electromagnetic material is proposed. The working principle of the new designed power divider is analyzed, and the phase and impedance of the transmission line of artificial electromagnetic material are analyzed. Based on the structure of miniaturized Bagley power divider and a miniaturized resonator based on artificial electromagnetic material, a miniaturized filter Bagley power divider is designed. Through processing, physical testing, two three-way power divider circuits have achieved good performance and achieved the goal of miniaturization.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN626

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