A wideband high-gain millimeter-wave planar end-fire antenna based on spoof surface plasmon polaritons (SSPPs) is proposed. A symmetric SSPP transmission line is used to adjust the phase of the wave on the outer edges. By loading metal strips with I-shaped resonators, a transmission line which exhibits a SSPP-like behavior is formed. It is used to extend the lower limit of the working bandwidth from 34.75 to 24 GHz. The measured working bandwidth covers the frequency band from 24 to 40 GHz, which includes the whole Ka band, and the n257, n258, n260 bands in 5G communication. And the measured peak gain is 18 dBi. Therefore, the proposed antenna is suitable for millimeter-wave communication applications.

中文翻译：

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基于欺骗表面等离子体极化激元的宽带高增益平面端射天线加载工字谐振器

提出了一种基于欺骗表面等离子体激元 (SSPPs) 的宽带高增益毫米波平面端射天线。对称的 SSPP 传输线用于调整外边缘波的相位。通过在金属条上加载 I 形谐振器，可以形成表现出类似 SSPP 行为的传输线。它用于将工作带宽的下限从 34.75 GHz 扩展到 24 GHz。实测工作带宽覆盖24~40GHz频段，包括整个Ka频段，以及5G通信中的n257、n258、n260频段。测得的峰值增益为 18 dBi。因此，所提出的天线适用于毫米波通信应用。