Analysis and modeling of Fano resonances using equivalent circuit elements

Lv, Bo; Li, Rujiang; Fu, Jiahui; Wu, Qun; Zhang, Kuang; Chen, Wan; Wang, Zhefei; Ma, Ruixue

doi:10.1038/srep31884

Cited by 34 publications

(23 citation statements)

References 20 publications

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“…In order to better understand the mechanism of the EIT, we give the equivalent circuit of the metamaterial to analyze its transmission spectrum characteristic [26]. In the passive electric system, the four passive components can imitate EIT formation.…”

Section: Results and Analysismentioning

confidence: 99%

Electromagnetically induced transparency metamaterial with strong toroidal dipole response

Shen

Yang

Huang

et al. 2020

Mater. Res. Express

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This paper designs a planar electromagnetically induced transparency (EIT) metamaterial, which comprises an asymmetric ellipse split resonance ring (AESRR) and cut wire (CW). The proposed EIT metamaterial works in the wide range of incident angles and has polarization-sensitive at two transmission dips. The frequency of transparency peak is 10.67 GHz and maintains a high qualityfactor (180.84). By calculating the multipole's radiated power, it can be found that the toroidal dipole response is enhanced, while the electric dipole response is suppressed at the transparency peak. Interestingly, this paper firstly uses the radiated power of electric dipole to elucidate the polarization sensitivity in two minimal transmissions. Meanwhile, the coupling mechanism of the EIT metamaterial is analyzed by the two-oscillator model and equivalent circuit.

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Section: Results and Analysismentioning

confidence: 99%

Electromagnetically induced transparency metamaterial with strong toroidal dipole response

Shen

Yang

Huang

et al. 2020

Mater. Res. Express

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“…The frequency splitting phenomenon of the defected MTS occurs when non-identical resonant unit cells. It can be explained in terms of Fano interference [30,35], which is much more sensitive to the defected position in its periodicity. It is observed that there are two peaks and the first one is smaller than the second one except two positions of No.…”

Section: Resultsmentioning

confidence: 99%

A Defected Metasurface for Field-Localizing Wireless Power Transfer

Chaimool¹,

Rakluea²,

Zhao³

et al. 2021

Wireless Power Transfer – Recent Development, Applications and New Perspectives

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The potential of wireless power transfer (WPT) has attracted considerable interest for various research and commercial applications for home and industry. Two important topics including transfer efficiency and electromotive force (EMF) leakage are concerned with modern WPT systems. This work presents the defected metasurface for localized WPT to prevent the transfer efficiency degraded by tuning the resonance of only one-unit cell at the certain metasurface (MTS). Localization cavities on the metasurface can be formed in a defected metasurface, thus fields can be confined to the region around a small receiver, which enhances the transfer efficiency and reduces leakage of electromagnetic fields. To create a cavity in MTS, a defected unit cell at the receiving coils’ positions for enhancing the efficiency will be designed, aiming to confine the magnetic field. Results show that the peak efficiency of 1.9% for the case of the free space is improved to 60% when the proposed defected metasurface is applied, which corresponds to 31.2 times enhancements. Therefore, the defected MTS can control the wave propagation in two-dimensional of WPT system.

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“…Using the analysis of Fano resonances [24], we model the lossless double split ring as an undamped equivalent circuit with a capacitor C C representing the broadband-bright mode in series with a parallel LC resonance circuit consisting of L 0 and C 0 , which simulates the narrowband-dark mode. The stable-input impedance Z of this circuit is…”

Section: A Simulation Results and Analysismentioning

confidence: 99%