A Compact Triple-Band Negative Permittivity Metamaterial for C, X-Band Applications

Marathe, Dushyant; Kulat, K. D.

doi:10.1155/2017/7515264

Cited by 30 publications

(18 citation statements)

References 37 publications

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“…The dimensional aspect with the requirement of insensitive behavior covering wide angle of stability is the ultimate requirement. Many kinds of research have been carried out over metamaterial based microwave absorber 3–10 . The researchers have investigated metamaterial based single band absorber, 3–5 dual‐band absorber, 6–7 and triple‐band absorber 8–10 and most of them are polarization insensitive.…”

Section: Introductionmentioning

confidence: 99%

“…Many kinds of research have been carried out over metamaterial based microwave absorber. [3][4][5][6][7][8][9][10] The researchers have investigated metamaterial based single band absorber, [3][4][5] dual-band absorber, [6][7] and triple-band absorber [8][9][10] and most of them are polarization insensitive. In the work of various researchers, the geometry of unit cell acts as a limiting condition to explore the possibility of multiband with optimized dimensions.…”

Section: Introductionmentioning

confidence: 99%

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Design of super compact ultrathin perfect wide‐angle polarization independent metamaterial absorber for C, X, and Ku band applications

Puri

Singh

2021

Micro & Optical Tech Letters

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This article focuses on the design of super compact, polarization insensitive with wide angular stability, ultrathin triple‐band metamaterial absorber. The unit cell comprising patches achieves almost perfect absorption (close to 100%) at C, X, and Ku band thereby justifying the term perfect metamaterial absorber. The structure provides 99.96%, 99.98%, and 99.62% absorptivity at the 4.75 GHz (C‐band), 9.47 GHz (X‐band), and 14.40 GHz (Ku‐band), respectively. The dimension of the structure is super compact of the order of 7.2 × 7.2 × 0.8 mm3 along with the ultrathin profile. The unit cell thickness is 0.012 λlowest (where λlowest is at a lowest cut‐off frequency). The proposed absorber comprises an outermost ring, split ring, innermost ring and square line with triangle patches at the boundary. The combinational effect of rings and internal patch provides perfect absorption at designated frequencies. Further, equivalent circuit is explained for the proposed design. The absorptivity remains insensitive towards transverse electric and transverse magnetic polarized wave and exhibits matched absorption. Moreover, the stability of the proposed design is validated with the different incident (for TE and TM modes) and polarization angles. The results are found close to perfect absorption. Finally, the simulated results are validated with measured results and found in close agreement.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of super compact ultrathin perfect wide‐angle polarization independent metamaterial absorber for C, X, and Ku band applications

Puri

Singh

2021

Micro & Optical Tech Letters

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“…However, the proposed metamaterial consists of many layers of materials, resulting in complicated structure. In [10], a triple-band resonator was employed for negative permittivity metamaterial operated in C-band and X-band. The unit cell consists of open delta structure within square ring.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Metamaterial Based on Jerusalem Cross Structure With Interdigital Technique for LTE and WLAN Systems

et al. 2020

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This paper presents a novel metamaterial based on Jerusalem cross structure with interdigital technique to be applied for dual-band systems. The proposed structure can operate at resonant frequencies of 1.8 and 5.5 GHz for LTE and WLAN bands, respectively. The interdigital structure was added to connect at the end of the Jerusalem cross structure in order to control the resonant frequencies and to promote for permittivity adjustment. The proposed metamaterial unit cell was designed to achieve the simulated dual-band operation with bandwidths of 1.70 ∼ 1.95 GHz at 1.8 GHz and 5.06 ∼ 6.04 GHz at 5.5 GHz, respectively. The unit cell size is reduced from λ/2 to λ/4 which is much smaller than the conventional structure. The 5×5 unit cells of metamaterials were implemented as a reflector for a dipole antenna resulting in dual-band operation with bandwidths of 1.58 ∼ 1.88 GHz at 1.8 band and 5.05 ∼ 5.68 GHz at 5.5 band, respectively. Besides, the dipole antenna with the proposed metamaterial reflector has measured gains up to 8.23 dBi at 1.8 GHz and 8.30 dBi at 5.5 GHz, respectively. Moreover, the shape of metamaterial structure is symmetrical, so it can be used for dual linear polarization. Also, the antenna with the proposed reflector has low profile with the distance of λ/8 between radiator and reflector. Therefore, the proposed metamaterial can be applied for any antenna applicable for LTE and WLAN applications.

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“…The first one, called the epsilon-negative (ENG) material, which has a negative real part of the complex permittivity and a positive real permeability (ε < 0 and μ > 0). The second one, called the mu-negative (MNG) materials, has a negative real part of the complex permeability and a positive real permittivity (ε > 0 and μ < 0) [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Filters Based on a Single Negative Photonic Comb-Like Structure

Ben-Ali¹,

Tahri²,

Bria³

2019

PIER C

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This work describes a theoretical study of filters using a defect in one-dimensional photonic comb-like structure. This photonic comb-like structure is constituted by finite or infinite segments which have negative permeability and grafted in each site by a finite number of lateral branches (play the role of the resonators), which consists of a negative permittivity. Numerical results exhibit the permissible bands which are separated by gaps (forbidden band). These gaps originate not only from the periodicity of the system but also from the resonance states of the grafted lateral branches. We study the effect of the presence of a resonator defect on the transmission behavior, phase, and phase time. The electromagnetic band structure shows that there is a defect mode in the gap. The transmission rate and the reduced frequency of this mode are related to the variation of defect length. Similarly, we calculate, for the first time, the quality factor evolution of this defect mode when the defect length varies. This structure can be used as a new optical filter in the microwave range with a high factor of quality and of transmission.

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A Compact Triple-Band Negative Permittivity Metamaterial for C, X-Band Applications

Cited by 30 publications

References 37 publications

Design of super compact ultrathin perfect wide‐angle polarization independent metamaterial absorber for C, X, and Ku band applications

Design of super compact ultrathin perfect wide‐angle polarization independent metamaterial absorber for C, X, and Ku band applications

Dual-Band Metamaterial Based on Jerusalem Cross Structure With Interdigital Technique for LTE and WLAN Systems

Electromagnetic Filters Based on a Single Negative Photonic Comb-Like Structure

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