Triple-band asymmetric transmission of linear polarization with deformed S-shape bilayer chiral metamaterial

Zhou, Zhimou; Yang, Helin

doi:10.1007/s00339-015-8983-9

Cited by 45 publications

(28 citation statements)

References 19 publications

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“…From Table 8, the bandwidth of the designed meta atom is 3.70 GHz, which is almost threefold of that in [8]. However, the bandwidth has increased by almost 12.16%, 61.89%, 28.38%, and 58.64% of those in [9], [10], [11], and [12], respectively. …”

Section: Parametric Studies Analysismentioning

confidence: 97%

“…the bandwidths cover 3.70 GHz and 2.22 GHz, respectively. The proposed meta-atom unit cell shows a larger bandwidth than the reference prototypes [8][9][10][11][12] and exhibits double negative characteristics of the resonance frequency. Besides, here a parametric study has been performed to demonstrate the effects of inductance and capacitance on resonance frequencies.…”

mentioning

confidence: 99%

“…A "V-shaped" metamaterial structure, displaying a 450 MHz bandwidth from 8.05 to 8.50 GHz, was presented by Ekmekci et al in 2007 [9]. Later, an "S-shaped", 15£15 mm chiral metamaterial for X and Ku bands, yet with the effective medium ratio less than 4, was designed by Zhimou et al in 2015 [10]. Furthermore, a "Π-shaped" metamaterial applicable for X-band, whose dimensions were 10£10 mm and the effective medium ratio was less than 4, was exhibited by Islam et al in 2015 [5].…”

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confidence: 99%

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Parametric studies on split S-shaped composite meta atom for X-band communication

Hasan

Faruque

Islam

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. The aim of this paper is to describe a split S-shaped composite meta atom which shows double negative characteristics at resonance frequency. The proposed meta-atom structure exhibits an almost 3.70 GHz bandwidth when the operating frequency from 8 to 14 GHz (X-band). In this study, the ring width, split width, size of substrate material, and the substrate material itself are varying to investigate their effect on the resonance frequencies. Metal strips of the outer resonator are the splits and the inner ring resonator is designed in a way that it forms a split S-shaped structure on the epoxy resin fibre (FR-4) substrate material. The CST Microwave Studio electromagnetic simulator software was used for the design and simulation purposes, and an Agilent N5227A vector network analyser was used for practical measurements.Key words: Capacitance, DNG, inductance, meta atom.Parametric studies on split S-shaped composite meta atom for X-band communication Mallik et al. in 2013 [7]. Moreover, a "Z-shaped" meta atom working only in a single band with a single negative property was introduced by Dhouibi et al. in 2012 [8]. A "V-shaped" metamaterial structure, displaying a 450 MHz bandwidth from 8.05 to 8.50 GHz, was presented by Ekmekci et al. in 2007 [9]. Later, an "S-shaped", 15£15 mm chiral metamaterial for X and Ku bands, yet with the effective medium ratio less than 4, was designed by Zhimou et al. in 2015 [10]. Furthermore, a "Π-shaped" metamaterial applicable for X-band, whose dimensions were 10£10 mm and the effective medium ratio was less than 4, was exhibited by Islam et al. in 2015 [5]. However, a "ring-shaped" meta atom for wearable microwave meta-skin and cloaking effects with a range from 8.0 to 10 GHz was suggested by Yang et al. in 2016 [11]. A modified double negative "Z-shaped" metamaterial was developed for wideband operations, but the bandwidth was 2.17 GHz (from 7.87 to 10.04 GHz). This metamaterial structure, compact in size and applicable for C-and X-band applications, was proposed by Hasan et al. in 2016 [12].In this paper, the designed meta-atom structure is comprised of a split S-shaped ring resonator with an outer square-shaped ring resonator made out of copper. The proposed unit cell exhibits resonances at X-band with negative refractive index from 8.0 to 11.70 GHz and 11.78 to 14.0 GHz, i.e. the bandwidths cover 3.70 GHz and 2.22 GHz, respectively. The proposed meta-atom unit cell shows a larger bandwidth than the reference prototypes [8][9][10][11][12] and exhibits double negative characteristics of the resonance frequency. Besides, here a parametric study has been performed to demonstrate the effects of inductance and capacitance on resonance frequencies. By increasing the length or width of the metal strip, the inductive effect is raised and the LC resonance frequency is decreased. Consequently, the splits are creating capacitance, but with an increase of split width sequentially, the capacitive effect is reducd and the LC

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Section: Parametric Studies Analysismentioning

confidence: 97%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Parametric studies on split S-shaped composite meta atom for X-band communication

Hasan

Faruque

Islam

2017

Bulletin of the Polish Academy of Sciences Technical Sciences

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“…Moreover, the proposed structure’s dimension is 10 × 10 mm 2 , which is quite a bit smaller than the metamaterial unit cell presented in [17,18]. As a result, the effective medium ratio of the unit cell is more than 4, and it is suitable for operating the sub-wavelength regime.…”

Section: Introductionmentioning

confidence: 96%

A New Compact Double-Negative Miniaturized Metamaterial for Wideband Operation

et al. 2016

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The aim of this paper is to introduce a compact double-negative (DNG) metamaterial that exhibits a negative refractive index (NRI) bandwidth of more than 3.6 GHz considering the frequency from 2 to 14 GHz. In this framework, two arms of the designed unit cell are split in a way that forms a Modified-Z-shape structure of the FR-4 substrate material. The finite integration technique (FIT)-based Computer Simulation Technology (CST) Microwave Studio is applied for computation, and the experimental setup for measuring the performance is performed inside two waveguide ports. Therefore, the measured data complies well with the simulated data of the unit cell at 0-degree and 90-degree rotation angles. The designed unit cell shows a negative refractive index from 3.482 to 7.096 GHz (bandwidth of 3.61 GHz), 7.876 to 10.047 GHz (bandwidth of 2.171 GHz), and 11.594 to 14 GHz (bandwidth of 2.406 GHz) in the microwave spectra. The design also exhibits almost the same wide negative refractive index bandwidth in the major region of the C-band and X-band if it is rotated 90 degrees. However, the novelty of the proposed structure lies in its effective medium ratio of more than 4, wide bandwidth, and compact size.

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“…Hasan et al [ 9 ] proposed a square I-shaped metamaterial that for S-, C- and Ku-band applications. Zhou et al [ 10 ] proposed a 15 × 15 mm 2 S shaped metamaterial applicable for the X- and Ku-bands, but its effective medium ratio was less than 4. Riwan et al [ 11 ] proposed a left-handed F-shaped metamaterial for microwave applications.…”

Section: Introductionmentioning

confidence: 99%

Left-handed metamaterial inspired by joint T-D geometry on flexible NiAl2O4 substrate

et al. 2018

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In this paper, we introduce a new compact left-handed tunable metamaterial structure, inspired by a joint T-D shape geometry on a flexible NiAl2O4 substrate. The designed metamaterial exhibits an extra-large negative refractive index bandwidth of 6.34 GHz, with an operating frequency range from 4 to 18 GHz. We demonstrate the effects of substrate material thickness on the effective properties of metamaterial using two substrate materials: 1) flame retardant 4 and 2) flexible nickel aluminate. A finite integration technique based on the Computer Simulation Technology Microwave Studio electromagnetic simulator was used for our design, simulation, and investigation. A finite element method based on an HFSS (High Frequency Structure Simulator) electromagnetic simulator is also used to simulate results, perform verifications, and compare the measured results. The simulated resonance peaks occurred at 6.42 GHz (C-band), 9.32 GHz (X-band), and 16.90 GHz (Ku-band), while the measured resonance peaks occurred at 6.60 GHz (C-band), 9.16 GHz (X-band) and 17.28 GHz (Ku-band). The metamaterial structure exhibited biaxial tunable properties by changing the electromagnetic wave propagation in the y and z directions and the left-handed characteristics at 11.35 GHz and 13.50 GHz.

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Triple-band asymmetric transmission of linear polarization with deformed S-shape bilayer chiral metamaterial

Cited by 45 publications

References 19 publications

Parametric studies on split S-shaped composite meta atom for X-band communication

Parametric studies on split S-shaped composite meta atom for X-band communication

A New Compact Double-Negative Miniaturized Metamaterial for Wideband Operation

Left-handed metamaterial inspired by joint T-D geometry on flexible NiAl2O4 substrate

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