Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

Du, Bing; Xu, Zhuo; Wang, Jun; Xia, and Song

doi:10.2528/pierc16042806

Cited by 7 publications

(6 citation statements)

References 19 publications

(19 reference statements)

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“…In 2016, Yang et al demonstrated a "ring-shaped" 5 × 5-mm 2 meta-atom for wearable, flexible and stretchable microwave meta-skin, with clocking effects from 8-13 GHz and an effective medium ratio of six [5]. In 2016, Du et al presented a left-handed metamaterial created by the combination of ferrite sheets and dielectric rods to investigate the electromagnetic properties for X-band applications [20]. In 2016.…”

Section: Introductionmentioning

confidence: 99%

“…The dimensions of the designed meta-atom are 10 × 10 mm 2 , which is compact in size according to the effective medium ratio and comparison with [5,17,19,[21][22][23]. The proposed meta-atom unit cell and arrays also exhibit more frequency bands with a wider bandwidth than [1, 4,5,16,17,[19][20][21][22][23]. Moreover, the proposed meta-atom is used for enhancing the antenna bandwidth, number of frequency bands and gain because the number of frequency bands, bandwidth and gain of the antenna can be improved by using the partial or slotted or fractal or meta-atom integrated ground plane.…”

Section: Introductionmentioning

confidence: 99%

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Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application

2017

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Abstract:A new compact left-handed meta-atom for S-, C-and Ku-band applications is presented in this paper. The proposed structure provides a wide bandwidth and exhibits left-handed characteristics at 0 • , 90 • , 180 • and 270 • (xy-axes) rotations. Besides, the left-handed characteristics and wide bandwidth of 1 × 2, 2 × 2, 3 × 3 and 4 × 4 arrays are also investigated at the above-mentioned rotation angles. In this study, the meta-atom is designed by creating splits at the outer and inner square-shaped ring resonators, and a metal arm is placed at the middle of the inner ring resonator. The arm is also connected to the upper and lower portions of the inner ring resonator, and later, the design appears as an I-shaped split ring resonator. The commercially available, finite integration technique (FIT)-based electromagnetic simulator CST Microwave Studio is used for design and simulation purposes. The measured data comply well with the simulated data of the unit cell for 1 × 2, 2 × 2, 3 × 3 and 4 × 4 arrays at every rotation angle. Owing to the effective medium ratio (EMR) of 8.50 at 0 • and 180 • rotations, the proposed meta-atom structure is compact in size. Moreover, due to the quality factor of 82, the designed meta-atom is flexible for high-performance antenna, filter and sensor applications. Therefore, the meta-atom integrated antenna shows multi frequency bands with the highest peak gain of 5 dBi, which is used as the long distance radio communication frequency.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application

2017

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“…In 2003, Holloway proposed a structure using dielectric particles embedded into a dielectric background material to produce negative permittivity and permeability, based on Mie resonance. Since then, several all‐dielectric structures, which can behave as left‐handed or negative index metamaterials, have been proposed. These dielectric metamaterials (DMM) require a high permittivity cube or particle as the resonating unit cell, leading to limited flexibility and increased fabrication complexity, particularly in the high‐frequency operating band.…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Polarization Converter Based on Dielectric Metamaterial

Gao

Wang

Qiang

et al. 2018

Physica Status Solidi (a)

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In this study, the development of a novel polarization converter using all‐dielectric‐based metamaterial, for the simultaneous high‐efficiency conversion of both linearly and circularly polarized electromagnetic waves is reported. Supported by the field transformation technique, the developed converter is analyzed based on two methods: the constituent parameter and the decoupling incident‐wave. Additionally, the inter‐relationship among the structural parameters of the proposed structure and the effect of their individual variations are well investigated. The simulation and experimental results indicate that the developed polarization converter, which operates at approximately 12 GHz, converts up to 99.9% of the induced wave into its cross‐polarized wave in the transmitted component. Moreover, the stability performance of the developed polarization converter reveals that the device exhibits moderate conversion efficiency over a wide incident‐wave‐angle variation range.

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“…There are various strategies reported for tuning the magnetic resonance of the permeability include electrical control [16,17], magnetically control [18], and temperature changing [19,20]. Generally, tunability is introduced by ferromagnetic materials [21,22], ferroelectric [13,23], liquid crystal [20,24,25], etc. However, the abovementioned tunable NIMs mostly operated at the low frequencies or high losses.…”

Section: Introductionmentioning

confidence: 99%

Thermotunable Terahertz Negative-Index Metamaterials with Dielectric Spheres Embedded in Semiconductor Host

Chen

Qin

et al. 2018

Advances in Condensed Matter Physics

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A possibility to realize thermotunable isotropic negative-index metamaterials up to terahertz regime is theoretically investigated. The proposed composite metamaterials consist of dielectric spheres embedded randomly in a semiconductor host medium. As the variation in the intrinsic carrier density in InSb due to a variation in temperature thus changes the plasma frequency, we show theoretically the provided composite metamaterials whose index of refraction is thermally tunable and potentially less propagation loss. Furthermore, the effects of the radius of the dielectric sphere on the modulation frequency and bandwidth are discussed. Finally, we find that the design parameters for the composites can be scaled for application in the higher frequency regions.

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Magnetically Tunable Ferrite-Dielectric Left-Handed Metamaterial

Cited by 7 publications

References 19 publications

Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application

Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application

Multifunctional Polarization Converter Based on Dielectric Metamaterial

Thermotunable Terahertz Negative-Index Metamaterials with Dielectric Spheres Embedded in Semiconductor Host

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