毫米波人工表面等离激元的传输理论及行波天线研究

人工表面等离激元是一种具有亚波长尺度及局域化场增强能力的表面波，具有低损耗、强束缚、易调控等优势，在毫米波领域有着重要的应用前景。本项目研究毫米波频段人工表面等离激元的传输理论和行波天线技术。具体包括：1)建立人工表面等离激元传输线的模式理论和等效电路；2)探究人工表面等离激元的慢波辐射机理及宽带化技术，实现小口径、超宽带、高增益的端射天线；3)研究人工表面等离激元的快波辐射机理及其快速扫描技术，研制高扫描率、可调控的大角度扫描漏波天线。上述工作可为毫米波通信与雷达系统中人工表面等离激元的行波天线设计建立系统的理论和方法，因此具有基础创新性和工程应用价值。

Spoof surface plasmon polaritons (SSPP) is a kind of subwavelength surface wave with field confinements and enhancements. Due to the advantages of low loss, strong confinements and controllable dispersion properties, SSPP have important potentials in millimeter-wave applications. This project explores the transmission lines and traveling-wave antennas technology based on spoof surface plasmon polaritons in millimeter-wave band. For details: 1) We will study the mode theory and equivalent circuit of SSPP transmission lines. 2) We will study slow wave radiation mechanism and wideband technology of SSPP to design small aperture, high gain and ultra-wideband end-fire antennas. 3) We will study the fast wave radiation mechanism and the fast scanning technology of SSPP, and develop high scanning rate and adjustable large-angle scanning leak-wave antennas. The work can establish a systematic theory and method for the design of traveling-wave antennas of SSPP in millimeter-wave communications and radar systems. This project has fundamental innovation and engineering application value.