Wideband Small Aperture Endfire Antenna Based on Spoof Surface Plasmon Polaritons
Yangbin Jiang, Leilei Liu, Yangjun Hu, Dingwei Jiang
Abstract
This communication presents a wideband endfire antenna based on odd mode spoof surface plasmon polaritons (SSPPs). The odd mode SSPPs is supported by dipole-shaped unit cells. Since the introduction of phase reversal crossover, the ordinary antenna is segment to two sections of SSPPs with half-length that make up a two-element array. The endfire directivity of the proposed modified SSPPs antenna is enhanced due to the extra phase added by the phase reversal crossover. It achieves 67% relative bandwidth from 4 to 8 GHz. The maximum measured endfire gain attains 7.9 dBi. The simulated and measured results are in good agreement over the operating band. The proposed antenna is wideband, low-profile, small aperture, and low-cost.