The Experts below are selected from a list of 279 Experts worldwide ranked by ideXlab platform
Qiang Cheng - One of the best experts on this subject based on the ideXlab platform.
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leaky wave radiations by modulating surface impedance on subwavelength Corrugated Metal structures
Scientific Reports, 2016Co-Authors: Yun Bo Li, Hui Feng, Wei Xiang Jiang, Qiang ChengAbstract: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.
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leaky wave radiations by modulating surface impedance on subwavelength Corrugated Metal structures
arXiv: Optics, 2016Co-Authors: Ben Geng Cai, Hui Feng, Wei Xiang Jiang, Qiang Cheng, Tie Jun CuiAbstract: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.
Tzong-jer Yang - One of the best experts on this subject based on the ideXlab platform.
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Subwavelength Microwave Guiding by a Periodically Corrugated Metal Wire
Journal of Electromagnetic Waves and Applications, 2009Co-Authors: Tzong-jer Yang, L. F. ShenAbstract:The guiding properties of a periodically Corrugated Metal wire at microwave frequencies are studied theoretically. The outer radius of the Corrugated wire is of subwavelength size, and it seems difficult for spoof surface plasmon polaritons (SPPs) in the wire to be confined highly, even if the set of the geometric parameters of the wire structure is optimized. However, if the grooves of the Corrugated wire are filled with a dielectric with high permittivity, the strong field confinement of spoof SPPs can be achieved even at frequencies smaller than the asymptotic frequency, for which the SPP losses are quite low. It is also shown that for this type of wire structure, the subwavelength microwave guiding is available for a certain frequency range.
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terahertz surface plasmon polaritons on periodically Corrugated Metal surfaces
Optics Express, 2008Co-Authors: Linfang Shen, Xudong Chen, Tzong-jer YangAbstract:Based on a modal expansion of electromagnetic fields, a rigorous method for analyzing surface plasmon polaritons (SPPs) on a periodically Corrugated Metal surface has been formulated in this paper. This method takes into account the finite conductivity of the Metal as well as higher-order modes within the grooves of the surface structure, thus is able to accurately calculate the loss of these spoof SPPs propagating along the structured surface. In the terahertz (THz) frequency range, the properties of the dispersion and loss of spoof SPPs on Corrugated Al surfaces are analyzed. For spoof SPPs at THz frequencies, the strong confinement of the fields is often accompanied with considerable absorption loss, but the performance of both low-loss propagation and subwavelength field confinement for spoof SPPs can be achieved by the optimum design of surface structure.
Yun Bo Li - One of the best experts on this subject based on the ideXlab platform.
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leaky wave radiations by modulating surface impedance on subwavelength Corrugated Metal structures
Scientific Reports, 2016Co-Authors: Yun Bo Li, Hui Feng, Wei Xiang Jiang, Qiang ChengAbstract: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.
Linfang Shen - One of the best experts on this subject based on the ideXlab platform.
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high order modes of spoof surface plasmon polaritons on periodically Corrugated Metal surfaces
Progress in Electromagnetics Research M, 2009Co-Authors: Tao Jiang, Linfang Shen, Xufeng ZhangAbstract:High-order modes of spoof surface plasmon polaritons (SPPs) on the periodically Corrugated Metal surfaces are investigated theoretically with the modal expansion method. An analytical expression for the condition of existence of high-order modes is presented. The properties of high-order modes such as dispersion and fleld pattern are analyzed detailedly, from which it seems that the propagation of spoof SPPs along the Corrugated Metal surface is mainly based on the coupling between the open groove cavities.
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terahertz surface plasmon polaritons on periodically Corrugated Metal surfaces
Optics Express, 2008Co-Authors: Linfang Shen, Xudong Chen, Tzong-jer YangAbstract:Based on a modal expansion of electromagnetic fields, a rigorous method for analyzing surface plasmon polaritons (SPPs) on a periodically Corrugated Metal surface has been formulated in this paper. This method takes into account the finite conductivity of the Metal as well as higher-order modes within the grooves of the surface structure, thus is able to accurately calculate the loss of these spoof SPPs propagating along the structured surface. In the terahertz (THz) frequency range, the properties of the dispersion and loss of spoof SPPs on Corrugated Al surfaces are analyzed. For spoof SPPs at THz frequencies, the strong confinement of the fields is often accompanied with considerable absorption loss, but the performance of both low-loss propagation and subwavelength field confinement for spoof SPPs can be achieved by the optimum design of surface structure.
Wei Xiang Jiang - One of the best experts on this subject based on the ideXlab platform.
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leaky wave radiations by modulating surface impedance on subwavelength Corrugated Metal structures
Scientific Reports, 2016Co-Authors: Yun Bo Li, Hui Feng, Wei Xiang Jiang, Qiang ChengAbstract: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.
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leaky wave radiations by modulating surface impedance on subwavelength Corrugated Metal structures
arXiv: Optics, 2016Co-Authors: Ben Geng Cai, Hui Feng, Wei Xiang Jiang, Qiang Cheng, Tie Jun CuiAbstract: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.
