Full-Space and High-Scanning Rate Leaky-Wave Antenna Based on Spoof Surface Plasmon Polaritons

作者：Zhicheng Wu, Jun Wang, Lei Zhao, Zhongxiang Shen · 发表于：IEEE Antennas and Wireless Propagation Letters · 年份：2023 · DOI：10.1109/lawp.2023.3333259 · 被引用次数：29 · 研究领域：Plasmonic and Surface Plasmon Research、Photonic and Optical Devices、Microwave Engineering and Waveguides

A full-space and high-scanning-rate leaky-wave antenna (LWA) based on spoof surface plasmon polaritons (SSPPs) is proposed, which consists of the SSPPs design and rectangular periodic metal patches. Electromagnetic (EM) waves are transmitted along the SSPPs and coupled to the metal patches to generate fast radiation waves, which can achieve back-to-front frequency beam scanning performance. Additionally, the radiation mechanisms of the design are explained by the dispersion relationship, space harmonics and electric field distributions. The proposed LWA radiates energy based on −1 order space harmonic, which can realize full space and high beam scanning rate performance by controlling the period of the patches. Simulation results show that the LWA realizes a full space beam scanning from −90° to 90° within the 12.9 to 16.5 GHz frequency band, while the antenna also maintains a high scan rate of 7.35°/%.