Pingping Ning

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A rectangular waveguide (RW) to domino plas-monic waveguide (DPW) converter in X-band (8.2-12.4GHz), which is based on the high-efficiency conversion between guided waves and domino plasmon polaritons (DPPs), is proposed in this work. A matching transition composed by gradient domino arrays and flaring upper wall to match the wave number and impedance(More)
This Letter proposes a simple band-notched coplanar waveguide (BNCPW), which consists of a coplanar waveguide (CPW) and an ultra-thin periodic corrugated metallic strip that supports spoof surface plasmon polaritons (SSPPs) with defect units on the back of the substrate. By introducing a defect unit or multiple defect units into the strip, a narrow stopband(More)
In this work, we explore the existence of spoof surface plasmons (SSPs) supported by deep-subwavelength high-contrast gratings (HCGs) on a perfect electric conductor plane. The dispersion relation of the HCGs-based SSPs is derived analyt- ically by combining multimode network theory with rigorous mode matching method, which has nearly the same form with and(More)
Vehicular Ad-hoc network is new and emerging technology. Researchers are gaining interest in this technology. Due to its open nature it is vulnerable to various attacks. Sybil attack is one of them. Various defense techniques have been given by researchers. In this work we briefly explain those defense techniques, given recently. We categorize these(More)
In this work, we explore the existence of multiband localized spoof plasmons (LSPs) in closed textured cavities with multiple groove depths. It is interesting to note that the spoof LSPs in each band resemble those generated by the textured 2D cavities of the same periodicity with the corresponding single groove depth, and the field distributions and(More)
In this work, we build a smooth bridge between a coaxial waveguide and a plasmonic waveguide with subwavelength periodically cylindrical radial grooves, to realize high-efficiency mode conversion between conventional guided waves and spoof surface plasmon polaritons in broadband. This bridge consists of a flaring coaxial waveguide connected with a metal(More)
In this work, a smooth bridge between a traditional microstrip line and a two parallel metallic strips drilled with symmetrical grooves is designed to achieve ultra-wideband low-pass filtering characteristics. Numerical simulations on the S-parameters demonstrate the good performance in the whole pass band. This kind of plasmonic filter poses potential(More)
A simple band-notched coplanar waveguide (BNCPW) is presented in this paper, which is designed based on the idea that a defect mode in the bandgap between the fundamental and higher modes of the spoof surface plasmon polaritons (SSPPs) can be introduced to form a stopband. The BNCPW, a quite simple structure, consists of a coplanar waveguide (CPW) and a(More)
In this work, a band-pass plasmonic filter composed of a traditional microstrip line and a gradient metallic strip drilled with subwavelength holes is proposed. Numerical simulations on the S-parameters demonstrate the good performance in the pass band. This kind of plasmonic filter poses potential applications in developing advanced plasmonic integrated(More)
In this work, we propose a smooth transition structure from a coaxial waveguide to a helically plasmonic waveguide, which can achieve high-efficiency guiding and focusing of spoof surface plasmon polaritons on the conical metal wire decorated with periodically helical grooves. Numerical simulations of the proposed structure show that the amplitude of(More)
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