Electrically small multiband antenna based on spoof localized surface plasmons

Shao, Rong Lin; Li, Bo; Zhou, Yijing

doi:10.1051/epjam/2019009

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…Localized spoof surface plasmons (LSSPs) have been proposed to mimic the behaviors of localized surface plasmons (LSPs) and have exciting properties of subwavelength confinement DOI: 10.1002/adfm.202305789 and near-field enhancement. [1][2][3][4][5] They are supported by ultrathin textured metallic disks [6] and are excellent candidates for sensors, [7][8][9][10][11] wearable devices, [12][13][14] planar waveguides, [15][16][17] bandpass filters, [18,19] invisibility cloaks, [20][21][22][23][24][25][26][27] antennas, [28][29][30] vortex-beam emitters, [31][32][33][34] isolators, [35] circulators, [36] directional couplers, [37,38] quasi-bound states in the continuum (quasi-BICs) resonators, [39,40] rat-race couplers, [41] logic gates, [42] etc. They are divided into electric LSSPs [3] and magnetic LSSPs.…”

Section: Introductionmentioning

confidence: 99%

Localized Spoof Surface Plasmon Skyrmions Excited by Guided Waves

Yin

et al. 2023

Adv Funct Materials

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Recently, skyrmions are constructed in the system of localized spoof surface plasmons (LSSPs), showing topological robustness and near‐equidistant multi‐resonant response. Guided wave excitation of the LSSP skyrmions plays an elementary role in large‐scale planar integration and construction of complex networks. However, it is not investigated. In this study, the LSSP skyrmions are excited by guided waves supported by two kinds of widely used transmission lines, microstrip line and coplanar waveguide. Space‐coiling meta‐structures with different shapes that support LSSP skyrmions are etched on the ground planes as defected ground structures (DGSs). All structures including resonator, transmission line, input and output ports are in one plane. The structures are fabricated on printed circuit boards (PCBs) and the near‐equidistant multi‐resonant spectra of the LSSP skyrmions are measured. Moreover, to reduce the material loss, the structure is made on MgB2 superconducting film, and the quality factor (Q‐factor) is increased by seven times compared to the corresponding mode on PCB. This study paves the way for the massive planar integration of the LSSP skyrmions and the construction of complex networks with the LSSP skyrmions, and provides an idea for developing metasurfaces with low material loss in the microwave and terahertz bands.

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Section: Introductionmentioning

confidence: 99%

Localized Spoof Surface Plasmon Skyrmions Excited by Guided Waves

Yin

et al. 2023

Adv Funct Materials

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“…[18] DOI: 10.1002/adts. 202200645 Many components and devices based on the LSSPs with different functions have been developed, such as sensors, [19][20][21][22][23][24][25] bandpass filters, [26][27] invisibility cloaks, [28][29][30][31] antennas, [32][33][34] vortex-beam emitters, [35][36][37][38][39][40] planar waveguides, [41][42][43] isolators, [44] circulators, [45] directional couplers, [46] and skyrmion generators. [47] According to different classification criteria, they can be divided into one-port, two-port, and four-port components; active and passive devices; [48] reciprocal and nonreciprocal networks; etc.…”

Section: Introductionmentioning

confidence: 99%

Fractional‐Order Localized Spoof Surface Plasmons for In‐Phase or Out‐of‐Phase Power Division

Zhu

et al. 2022

Advcd Theory and Sims

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Localized spoof surface plasmons (LSSPs) are extensively used to develop various functional components due to their excellent characteristics of subwavelength confinement and concomitant near‐field enhancement. In this paper, a rat‐race coupler based on fractional‐order LSSPs is proposed to achieve in‐phase or out‐of‐phase power division. It is a four‐port passive component with the advantage of miniaturization. In simulation and experiment, the feasibility of the rat‐race coupler is demonstrated and the existence of the rare fractional‐order LSSPs modes is conformed. More interestingly, a general design method is suggested, based on which arbitrary fractional‐order LSSPs modes can be constructed by skillfully tailoring the electrical lengths between ports. This paper expands the applications of the LSSPs and enriches the topological properties of the LSSPs.

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“…These devices can be considered as plasmonic metamaterials [25] that use altered geometries to achieve an average plasmonic behavior in the RF domain. However, they in general involve complex designs and are poorly versatile since they are built upon a fixed geometry [17,24,26,27]. Complex designs can lead to a difficult comprehension of the phenomena involved and a difficult comparison with the knowledge in conventional antennas [19].…”

Section: Introductionmentioning

confidence: 99%

Radioplasmonics: design of plasmonic milli-particles in air and absorbing media for antenna communication and human-body in-vivo applications.

Abraham-Ekeroth¹

2021

Preprint

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Surface plasmons with MHz-GHz energies are predicted by using milliparticles made of metamaterials that behave like metals in the radiofrequency range. In this work, the so-called Radioplasmonics is exploited to design scatterers embedded in different realistic media with tunable absorption or scattering properties. High-quality scattering/absorption based on plasmon excitation is demonstrated through a few simple examples, useful to build antennas with better performance than conventional ones. Systems embedded in absorbing media as saline solutions or biological tissues are also considered to improve biomedical applications and contribute with real-time, in-vivo monitoring tools in body tissues. In this regard, any possible implementation is criticized by calculating the radiofrequency heating with full thermal simulations. As proof of the versatility offered by radioplasmonic systems, plasmon “hybridization” is used to enhance near-fields to unprecedented values or to tune resonances as in optical spectra, minimizing the heating effects. Finally, a monitorable drug-delivery in human tissue is illustrated with a hypothetical example. This study has remarkable consequences on the conception of plasmonics at macroscales. The recently-developed concept of “spoof” plasmons achieved by complicated structures is simplified in Radioplasmonics since bulk materials with elemental geometries are considered.

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Electrically small multiband antenna based on spoof localized surface plasmons

Cited by 8 publications

References 28 publications

Localized Spoof Surface Plasmon Skyrmions Excited by Guided Waves

Localized Spoof Surface Plasmon Skyrmions Excited by Guided Waves

Fractional‐Order Localized Spoof Surface Plasmons for In‐Phase or Out‐of‐Phase Power Division

Radioplasmonics: design of plasmonic milli-particles in air and absorbing media for antenna communication and human-body in-vivo applications.

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