滤波器-天线一体化设计方法及应用研究

项目名称： 滤波器-天线一体化设计方法及应用研究

项目编号： No.61471280

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 邓敬亚

作者单位： 西安电子科技大学

项目金额： 83万元

中文摘要： 天线和微波滤波器都是射频系统的必要器件，传统方法将天线和滤波器单独设计并分别匹配到特性阻抗再级联，阻抗匹配网络会降低系统性能、增大体积。 本项目把滤波器和天线作为一个整体系统，将天线看作该系统的末级谐振器，参照耦合谐振腔滤波器理论，把滤波器-天线系统看作带通滤波器研究其一体化综合方法，并在此方法的指导下开展以下应用研究：在保证系统性能不变或更优前提下，研究可实现滤波器降阶和天线免匹配的滤波器-天线协同设计方法以降低系统体积和复杂度；研究兼具高阻抗带宽和高方向图带宽的宽带天线设计方法；用实验验证所研究理论和设计方法的正确性。本项目所研究的方法可在提高射频系统整体性能的同时降低其复杂度和体积，研究成果可为优化无线电射频系统做理论指导和技术储备。为了加工方便，本项目拟采用印刷电路为天线和滤波器的实现形式验证所述设计方法，但所研究的设计方法具有普适性。

中文关键词： 集成天线；滤波天线；宽带天线

英文摘要： Both antenna and microwave filter are essential components of R F systems. In the classic procedures, the antenna and microwave are matched to characteristic impedance before connection, the impedance matching network will increase the complexity of the system. This project views the filter and the antenna as a integral system, in which the antenna will be seen as the last resonator, the filter-antenna subsystem will be seen as a bandpass filter to research its synthesis methodology based on the coupled resonator bandpass filter principle.The followed researches will be guided by this synthesis methodology: the filter-antenna design method, which can reduce the order of the filter and remove the matching network of the antenna, will be researched on the premise that the filter-antenna system can get the same or better performance; the antenna design method, which can make both impedance bandwidth and pattern bandwidth wider, will also be researched; the principles and design methods researched in this project will be experimentally verified. The principles and the methods researched in this project can improve the performance of the RF system while the complexity and the volume are reduced, the fruits of the research can be guidances and technical storages for the optimization of the wireless RF system. This project will use printed circuit board for convenience, but the researched method has general applicability.

英文关键词： Integrated Antenna;Filtering Antenna;Wideband Antenna