项目名称： 小型化多模谐振器宽带天线关键技术研究

项目编号： No.61501258

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 黄晓东

作者单位： 南京邮电大学

项目金额： 23万元

中文摘要： 多模谐振是近年来兴起的一种针对小型化天线的新型带宽展宽技术。研究表明，将该技术应用于传统的窄带天线之后，不仅能够成倍的拓展原天线阻抗带宽，还能同时保留住原天线的小型化优势，具有较大的发展潜力。. 本课题旨在解决当前多模谐振超宽带天线设计中的几个关键问题，以便进一步提高其实用价值，拓宽使用范围。计划研究多模辐射器超宽带天线的最小化问题，主要工作为在保持工作带宽基本不变的前提下，如何减少辐射器尺寸和免除宽带阻抗变换器；研究天线辐射模式的选择及抑制技术，以实现带宽可控、多频带和陷波等功能天线，能够通过针对性选择模式方向图，改善天线宽带辐射性能; 利用参数提取技术研究天线等效电路模型，探索天线物理结构参数与电路模型参数之间的对应关系，为天线的电路级分析奠定基础，并能为此类天线的综合设计提供研究思路。

中文关键词： 宽带天线；频带展宽；宽带匹配；方向图带宽展宽；宽频带天线

英文摘要： Multiple mode resonance (MMR) is a recently developed bandwidth enhancement technique for compact antennas. For a traditional narrow-band antenna, it has been proven that the impedance bandwidth can be multiplied by applying this technique, whereas remaining its compact size. .In this proposal, we are going to study several key techniques in the MMR-based antennas, aiming at overcoming the drawbacks and to broaden the usage. First, the antenna miniaturization is going to be studied, including the size reduction of the MMR radiator itself and the cancellation of the wideband impedance transformer. Second, the mode-selection and/or mode-suppression techniques are to be studied, which are effective for bandwidth-controllable antennas, multiple-band antennas and frequency-notched antennas. Also, the improving of the radiation pattern bandwidth can be realized by applying the mode-suppression technique. Third, the antenna model in circuit level is going to be investigated. The equivalent circuit parameters will be extracted by using numerical approaches, the relationship between the geometrical parameters in antenna structure and the circuit parameters in the equivalent model is going to be explored, for developing synthesis method of the MMR-based wideband antennas.

英文关键词： Wideband Antenna;Bandwidth Enhancement;Wideband Impedance Matching;Radiation Pattern Bandwidth Enhancement ;Wide Frequency Band Antenna