新型双频带Butler矩阵研究

发布时间：2018-03-13 03:24

本文选题：传输线　切入点：定向耦合器　出处：《哈尔滨工业大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着经济的发展,我国的汽车数量越来越多,已经逐渐超过了我国高速公路的负载,由于车流量的巨大,高速公路的收费站已经严重的影响了车辆的通畅运行。车辆经过收费站时,需停车缴费,因此会影响高速公路的负载量,ETC收费系统,能够实现不停车缴费的功能,因此,对提高高速公路负载量有着巨大的帮助。ETC收费系统由阵列天线发射信号,而这些天线的馈电网络则通常采用Butler矩阵,该矩阵能够通过对天线位置和相位的调整,达到不同方向波束合成的效果。本文首先对ETC的发展现状进行了介绍,对比了Butler矩阵和其他馈电方式的优势,同时,对应用于ETC收费系统的辐射天线和双工器进行了介绍。本文还从理论方面对Butler矩阵进行了分析,介绍了Butler矩阵的理论基础——传输线理论;分析方法——多端口网络理论,以及组成Butler矩阵的3d B定向耦合器和移相器,最后,对Butler矩阵的特性进行了分析。本文还给出了3d B定向耦合器和移相器的一般设计方法,在此基础上,通过二元加载线的方法,设计了能够在2.4GHz和5.8GHz两个频点处能够同时工作的双频3d B定向耦合器和移相器,通过对其特性参数的计算,确定几何尺寸,并在CST中建模仿真,得到理想的结果;通过对所设计的双频3d B定向耦合器和移相器通过传输线连接排列,得到双频Butler矩阵,同样进行仿真,从结果可以看出,所设计Butler矩阵在工作频点处,输入端口的回波损耗均在-10d B以下,输出端口的传输系数均接近-6d B,表明该双频Butler矩阵具有较好的特性。最后本文对所设计的双频Butler矩阵进行了加工和测试,结果显示,实测结果和仿真结果符合较好,能够满足应用要求。
[Abstract]:With the development of economy in China, the number of cars more and more, has gradually exceeded the load of highway in our country, because traffic is huge, highway toll station has seriously affected the smooth operation of the vehicle. The vehicle through the toll station, parking fee, so it will affect the load of highway toll system, ETC no parking fee, can realize the function, therefore, with the help.ETC charging system huge transmission signal from the antenna array to improve the highway load, and the antenna feed network usually uses the Butler matrix, the matrix can pass on the antenna position and phase adjustment, to achieve the effect of the synthesis of different direction of beam. This paper the development status of ETC are introduced. The comparison of the Butler matrix and the other feeding advantages, at the same time, the corresponding charging system for ETC antenna and duplex Is introduced in this paper. This paper also theoretically analyzes the Butler matrix, introduces the basic theory of Butler matrix of transmission line theory; analysis method of multi port network theory and Butler matrix 3D B directional couplers and phase shifters, finally, properties of the Butler matrix are given in this paper are analyzed. The design method of 3D B directional coupler and a phase shifter, based on this method, through two yuan load line, designed to double 3D B directional coupler and a phase shifter while working in 2.4GHz and 5.8GHz two frequency points, the calculation of its parameters, determine the geometry, and modeling in CST simulation, get the desired results; according to the design of dual frequency 3D B directional couplers and phase shifters are connected through a transmission line, get double Butler matrix, the same simulation, it can be See, the design of Butler matrix in the working frequency, the input port return loss is -10d B, transmission coefficient of output ports were close to -6d B, shows that the double Butler matrix has good properties. Finally the processing and testing of the dual frequency Butler matrix design results show that the measured results meet the the good and the simulation results can meet the application requirements.

【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN62;U495

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