title: 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 periodically 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.
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.
authors.forename: Ben Geng
authors.initials: BG
authors.lastname: Cai
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.
authors.forename: Yun Bo
authors.initials: YB
authors.lastname: Li
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.|Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing, 210096, China.
authors.forename: Hui Feng
authors.initials: HF
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.|Synergetic Innovation Center of Wireless Communication Technology, Southeast University, Nanjing, 210096, China.
authors.forename: Wei Xiang
authors.initials: WX
authors.lastname: Jiang
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.|Cooperative Innovation Centre of Terahertz Science, No. 4, Section 2, North Jianshe Road, Chengdu 610054, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Cheng
authors.affiliation: State Key Laboratory of Millimeter Waves, Department of Radio Engineering Southeast University, Nanjing 210096, China.|Cooperative Innovation Centre of Terahertz Science, No. 4, Section 2, North Jianshe Road, Chengdu 610054, China.
authors.forename: Tie Jun
authors.initials: TJ
authors.lastname: Cui