Novel Dual-band Band-Pass Filters Based on Surface Plasmon Polariton-like Propagation Induced by Structural Dispersion of Substrate Integrated Waveguide

Scientific Reports
Norbert CselyuszkaNikolina Jankovic

Abstract

In this paper, we present two novel dual-band bandpass filters based on surface plasmon polariton-like (SPP-like) propagation induced by structural dispersion of substrate integrated waveguide (SIW). Both filters are realized as a three-layer SIW where each layer represents a sub-SIW structure with intrinsic effective permittivity that depends on its width and filling dielectric material. The layers are designed to have effective permittivities of opposite signs in certain frequency ranges, which enables SPP-like propagation to occur at their interfaces. Since three layers can provide two distinct SPP-like propagations, the filters exhibit dual-band behaviour. A detailed theoretical and numerical analysis and numerical optimization have been used to design the filters, which were afterwards fabricated using standard printed circuit board technology. The independent choice of geometrical parameters of sub-SIWs and/or the corresponding dielectric materials provide a great freedom to arbitrarily position the passbands in the spectrum, which is a significant advantage of the proposed filters. At the same time, they meet the requirements for low-cost low-profile configuration since they are realized as SIW structures, as well as for...Continue Reading

References

Jul 13, 2004·Science·J B PendryF J Garcia-Vidal
Sep 15, 2015·Optics Express·Xi GaoTie Jun Cui
Oct 16, 2015·Optics Letters·Bingzheng XuChangqing Gu
Nov 1, 2016·Scientific Reports·Lei ZhaoXiaopeng Shen
Sep 7, 2017·Scientific Reports·Shumin ZhaoWen Xuan Tang
Dec 8, 2017·Sensors·Jiangcai WangXiaofang Zhang

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