Design of High-Gain Single-Layer Endfire Antenna Using Phase-Reversed Asymmetric Spoof Surface Plasmon Polaritons

Mingru Xiao,Amir K. Rashid,Baiyang Liu, Rengui Fan,Qingfeng Zhang

IEEE Antennas and Wireless Propagation Letters(2022)

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Abstract
We present a novel endfire antenna based on asymmetric spoof surface plasmon polaritons (SSPPs) and phase-reversal technique. SSPPs structure allows it to be fabricated on a single-layer printed circuit board. Asymmetric SSPPs elements were employed to fulfill the condition of endfire radiation, and meanwhile, phase-reversal technique provides a high gain for the antenna. To verify the proposed design principle, a prototype was fabricated and measured. It exhibits a peak gain of 16.2 dBi within the operational frequency band of 17–19 GHz, featuring the highest endfire gain among all single-layer designs.
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Key words
Endfire antenna,high gain,phase reversal,spoof surface plasmon polaritons (SSPPs)
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