Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures
Abstract
One-dimensional (1D) subwavelength corrugated metal structures has been described to support spoof surface plasmon polaritons (SPPs). Here we demonstrate that a modulated 1D subwavelength corrugated metal structure can convert spoof SPPs to propagating waves. The structure is fed at the center through a slit with a connected waveguide on the input side. The subwavelength corrugated metal structure on the output surface is regarded as metasurface and modulated periodically to realize the leaky-wave radiation at the broadside. The surface impedance of the corrugated metal structure is modulated by using cosine function and triangle-wave function, respectively, to reach the radiation effect. Full wave simulations and measuremental results are presented to validate the proposed design.
Cite
@article{arxiv.1601.01458,
title = {Leaky-Wave Radiations by Modulating Surface Impedance on Subwavelength Corrugated Metal Structures},
author = {Ben Geng Cai and Yun Bo Li and Hui Feng Ma and Wei Xiang Jiang and Qiang Cheng and Tie Jun Cui},
journal= {arXiv preprint arXiv:1601.01458},
year = {2016}
}