Tunable negative index metamaterial using yttrium iron garnet

He, Yongxue; He, Peng; Yoon, S. D.; Parimi, Patanjali V.; Rachford, F. J.; Harris, Vincent G.; Vittoria, C.

doi:10.1016/j.jmmm.2006.12.031

Cited by 91 publications

(56 citation statements)

References 20 publications

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“…For example, MEMS ͑Micro Electrical Mechanical Systems͒ switches, varactor diodes, and other elements have been demonstrated to enable frequency tunable metamaterials. [25][26][27][28] A similar technique can be applied to the ELCs and SRRs of the ELC-SRR absorber to dynamically control its absorption properties.…”

Section: Discussionmentioning

confidence: 99%

A broadband low-reflection metamaterial absorber

Barrett

Hand

et al. 2010

Journal of Applied Physics

190

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Artificially engineered metamaterials have enabled the creation of electromagnetic materials with properties not found in nature. Recent work has demonstrated the feasibility of developing high performance, narrowband electromagnetic absorbers using such metamaterials. These metamaterials derive their absorption properties primarily through dielectric loss and impedance matching at resonance. This paper builds on that work by increasing the bandwidth through embedding resistors into the metamaterial structure in order to lower the Q factor and by using multiple elements with different resonances. This is done while maintaining an impedance-matched material at normal incidence. We thus present the design, simulation, and experimental verification of a broadband gigahertz region metamaterial absorber, with a maximum absorption of 99.9% at 2.4 GHz, and a full width at half maximum bandwidth of 700 MHz, all while maintaining low reflection inside and outside of resonance.

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Section: Discussionmentioning

confidence: 99%

A broadband low-reflection metamaterial absorber

Barrett

Hand

et al. 2010

Journal of Applied Physics

190

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“…During the previous DARPA funded program (Phase I) we have demonstrated a tunable negative refractive index metamaterial (TNIM) in K band rectangular waveguide using Yttrium Iron Garnet (YIG) and periodic copper wires [1]. In these designs YIG slabs and periodic array of copper wires were positioned side by side on the transverse direction to the wave propagation.…”

Section: Q Band Tunable Negative Index Metamaterials Design and Fabricmentioning

confidence: 99%

FASST Soil Moisture, Soil Temperature: Original Versus New

Frankenstein¹

2008

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“…For example, the composite of ferromagnetic materials could be a magnetically tunable metamaterial. He et al used yttrium iron garnet (YIG) sheets and copper wires to make tunable refractive index metamaterial [9]. Kang et al applied YIG rods with SRRs/wires to display a tunable double-negative metamaterial [10].…”

Section: Introductionmentioning

confidence: 99%

Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

Du¹,

Wang³

et al. 2016

PIER C

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Abstract-In this paper, a magnetically tunable metamaterial is proposed and studied. The metamaterial is based on the combination of ferrite sheets and dielectric rods. The tunable property is originated from the ferromagnetic resonance and electric response of dielectric rods. The retrieved electromagnetic parameters and transmission characteristic showed that by simultaneously inspiring the ferromagnetic resonance and electric resonance, composite metamaterial can possess double-negative band in the resonant state. Moreover, this band was tunable by adjusting applied magnetic fields. The simulations and experiments verified that the composite metamaterial clearly displayed a tunable feature. The proposed method is simple in designing tunable metamaterials.

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Tunable negative index metamaterial using yttrium iron garnet

Cited by 91 publications

References 20 publications

A broadband low-reflection metamaterial absorber

A broadband low-reflection metamaterial absorber

FASST Soil Moisture, Soil Temperature: Original Versus New

Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

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