Polarization-insensitive unidirectional spoof surface plasmon polaritons coupling by gradient metasurface

Shi Hong-yu¹, Zhang An-xue^{1, 2, †,}, Chen Jian-zhong¹, Wang Jia-fu³, Xia Song⁴, Xu Zhuo⁴

(a) The x component of the total electric field. (b) The y component of the total magnetic field. (c) The z component of the total electric field in the xz plane. (d) The total power flow in the xz plane at 5.09 GHz under parallel-polarized incidence. (e) The z component of the total electric field in the xy plane at z = 5 mm.