Excitation of anti-symmetric coupled spoof SPPs in 3D SIS waveguides based on coupling

Tian Li-li¹, Chen Yang², Liu Jian-long¹, Guo Kai¹, Zhou Ke-ya¹, Gao Yang³, Liu Shu-tian^{1, †,}

(a) The top view of the zipper structure with an RO4003 substrate. (b)–(e) The enlarged view of regions I, II, III, and IV of the zipper structure.