低阻槽线及其应用研究

The hardware of modern electron system consists of transmission lines and semiconductor devise. Transmission lines are used to connect devise, and in other hand, transmission lines themselves are basic units of microwave components. Therefore transmission lines should have diverse structures to meet various requirements from modern electron systems. A slot line has effects which cannot be substituted by other forms of transmission lines. However high characteristic impedance and inflexible structure of the slot line hinder its applications in modern electron systems. This project aims to investigate the various structures of low-impedance slot lines, loaded low-impedance slot lines and composite transmission lines based low-impedance slot lines, to analyze and reveal how the structures and dimensions of the slot lines affect their characteristic impedance and propagation constant, and to provide a solution to challenge to devise various structure of the slot line. After that, the projects will research the low-impedance slot line structures of matching, resonance, radiation, coupling, and feeding, and then devise transitions, filters and antennas based on low-impedance slot lines. The project has original research contents and perspective, and is highlighted by its fundamental, systematic and prospective characteristic. The implementation of the project will promote the application of slot lines, and promote the developments of modern telecommunication and radar systems.

现代电子系统硬件的组成就是传输线加半导体器件。传输线不仅起传输信号作用，而且其本身就是其它微波元件的基本单元。因此要求传输线具有灵活的结构形式以满足系统多样化的要求。槽线具有微带线等其它传输线不可替代的作用。但槽线阻抗高及结构灵活性差等缺陷妨碍了槽线应用的发展。本项目研究多种结构的低阻槽线及其加载和复合传输结构，解明低阻槽线的特性阻抗及传输特性与结构形式尺寸关系，解决低阻槽线的结构灵活性问题，在此基础上，研究低阻槽线的匹配、谐振、辐射、耦合和馈电结构，实现基于低阻槽线的过渡、滤波器和天线。本项目基础性系统性和前瞻性强，研究内容和研究视角新颖，课题组具有较好的工作基础和条件。本项目的实施将拓展槽线的应用，推动通信雷达等现代电子系统的发展。

现代电子系统硬件的组成就是传输线加半导体器件。传输线不仅起传输信号作用，而且其本身就是其它微波元件的基本单元。因此要求传输线具有灵活的结构形式以满足系统多样化的要求。槽线具有微带线等其它传输线不可替代的作用。但槽线阻抗高及结构灵活性差等缺陷妨碍了槽线应用的发展。本项目提出了多种结构的低阻槽线及其加载和复合传输结构，解明了低阻槽线的特性阻抗及传输特性与结构形式尺寸关系，解决了低阻槽线的结构灵活性问题，构成了一个全极化的、满足多样性连接和安装需要的完整的平面传输线系统；这些多样化的槽线结构可以满足射频和天线系统对传输线的特性阻抗、传播常数、模式极化方向和封装尺寸等多方面的要求。研究了低阻槽线的匹配、谐振、辐射、耦合和馈电结构，实现基于低阻槽线的过渡、功分器、滤波器和天线。针对表面贴装元件的封装尺寸和PCB加工工艺对槽线结构的限制，提出了可行的解决方案，完成了基于低阻槽线的过渡、功分器、滤波器和多种天线的应用研究，构成一个从基础到应用的完整链条。本项目拓展了槽线的应用范围，其成果可望应用于未来多种射频和天线系统中，应用于宽带无线通信、宽带高精度雷达和电磁兼容测试领域。.基于项目研究的成果和本项目研究的需要，获得了三件中国发明专利授权，发表了两篇IEEE Transaction Antennas and Propagation论文、一篇IEEE Antennas Wireless and Propagation Letter论文和两篇Microwave and Optical Technology Letter论文。