Creating Multiband and Broadband Metamaterial Absorber by Multiporous Square Layer Structure

Tran, Cuong; Hai, Pham Viet; Nguyen, Hien; Nguyễn, Thùy Anh; Vu, Lam Dinh; Tùng, Hoàng Thanh

doi:10.1007/s11468-019-00953-6

Cited by 33 publications

(14 citation statements)

References 22 publications

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“…The operation of SJC-shaped absorber is further proposed to THz frequencies suggesting the four perfect absorption peaks at 2.76, 2.89, 3.02 and 3.31 THz for wide/ broad band operations. [22] 7.03 ∼100 0.028λ 0.422λ dual Bhattacharyya et al [25] 6.56 99.3 0.0723λ 0.437λ dual Singh and Srivastava [18] 17 ∼100 0.022λ 0.487λ dual Deng et al [26] 101.25 92.5 0.016λ 0.493λ triple Jafari et al [17] 8.6 ∼100 0.045λ 0.688λ triple Tran et al [20] 5…”

Section: Resultsmentioning

confidence: 99%

“…Since then, numerous MMA based structures, including T-shape [7,9], split-ring structures [10], ring-shape [6,11,12], circular fractal [13], H-shape [14] and Jerusalem cross (JC) resonator [15][16][17] were proposed as a perfect multi-and broadband absorber in a wide EM-spectral regime. Several efforts have also been carried out for the advancement of multi-and broad-band MMAs by introducing coplanar or stacked multi-layer configurations employing different metallic resonant structures [5,[18][19][20]. In addition, different designs of polarisation controllable MMAs have been demonstrated for various applications including polarisation detection and imaging [21,22].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, different designs of polarisation controllable MMAs have been demonstrated for various applications including polarisation detection and imaging [21,22]. However, these techniques result in large dimensions, complex resonant structures and lesser absorption bands, which significantly affect their practical applications [20].…”

Section: Introductionmentioning

confidence: 99%

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Ultra‐thin metamaterial perfect absorbers for single‐/dual‐/multi‐band microwave applications

Jain

Singh

Pandey

et al. 2020

IET Microwaves, Antennas & Propagation

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In this study, the authors present three different metamaterial absorbers (MMAs) namely, T, split‐I (SI) and split‐Jerusalem cross (SJC) with different dimensions and geometrical configurations. The absorption rates of T‐, SI‐ and SJC‐shaped absorbers are studied at microwave frequencies. T‐shaped absorber demonstrates perfect absorption at 10.19 GHz, making it suitable for single band operation, whereas SI‐shaped absorber exhibits two perfect absorption peaks at 9.32 and 10.75 GHz finding its application in dual band operation. However, novel SJC‐shaped absorber demonstrates multiple absorption peaks at 9.92, 10.42, 10.93, 11.75 and 13.25 GHz with absorption of 99.5, 91, 99.9, 91.8 and 99.6%, respectively, making it suitable for X‐ and Ku‐band operations. The proposed MMAs have a thickness of around 0.8 mm (i.e. <λ/37) with respect to the lowest frequency of operation. Furthermore, the absorbers are analysed for different angles of polarisation and incidence for transverse electric polarised wave with a step size of 15°. The proposed absorbers have been fabricated and experimentally demonstrated at X‐band verifying the results obtained from simulations and implementing an equivalent circuit method. Further, SJC‐shaped absorber is demonstrated for multi‐and wide‐band terahertz applications exhibiting four perfect absorption peaks at 2.76, 2.89, 3.02 and 3.31 THz.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Ultra‐thin metamaterial perfect absorbers for single‐/dual‐/multi‐band microwave applications

Jain

Singh

Pandey

et al. 2020

IET Microwaves, Antennas & Propagation

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show abstract

“…(b) integrate several different sizes of metallic elements into a stacked structure [15][16][17][18]; and (c) use the combination methods of the (a) and (b) [19,20]. Although these methods can achieve excellent performance of the MAs, the starting point of these designs is the same, which combines several different frequencies of single-band absorption peaks, each of which resonance peak corresponds to a certain length of metallic element.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous realization of the single-band and broadband terahertz perfect absorber using one piece of metamaterial resonator

Wang

Tang

et al. 2020

SN Appl. Sci.

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A kind of terahertz metamaterial absorber, made of only an Au closed-ring resonator and a dielectric layer deposited on a continuous Au film, is presented to achieve bifunctional absorption characteristic. Unlike traditional absorbers having the single-functional absorption features of single-band or broadband, the designed device exhibits not only the single-band absorption response at frequency of 1.45 THz, but also a broadband absorption performance, which is caused by the superposition of three adjacent frequencies that are all localized at right side of the single-band absorption. Importantly, the relative absorption bandwidth of the broadband performance of the device over absorption rates of 50% and 80% can, respectively, reach 47.22% and 35.97%, which is very close to (and even exceed) the performance of previous single function of broadband absorbers that require several different lengths of metallic elements. The designed bifunctional absorber has the comprehensive advantages of the single functions of the single-band and broadband absorbers, and therefore, this work can offer an inspiring method to obtain a bifunctional absorber through using only one piece of metamaterial.

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“…The perfect metamaterial absorber (MA) was firstly presented by Landy et al [9]. Since then the MAs have been designed to exhibit different characteristics such as single-band [10,11], dual-band [12,13], multiband absorption [14][15][16][17] and broadband absorption [18][19][20][21]. Till now, most of the reported MAs are based on planar resonators (2D structure) [11,[22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

Deng

Sun

et al. 2020

Front. Phys.

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In this work, a single-band metamaterial absorber (MA) based on a three dimensional (3D) resonant structure is presented. The unit cell is composed of a standing gear-shaped resonator, which is embedded in the dielectric substrate. The proposed 3D MA is ultrathin with a total thickness of 2.3 mm, corresponding 0.077λ0 at its center frequency. The simulation results demonstrate a high absorption peak at 10.1 GHz with absorptivity of 99.9%. The proposed 3D MA is insensitive to the polarization of the incident wave due to its rotationally symmetric structure. Moreover, the proposed 3D MA exhibits a wide-incident-angle stability, as absorptivity of more than 85% can be achieved for both TE and TM incidences with incident angle up to 60°. Most importantly, multiband electromagnetic wave absorption of the stereo MA can be enabled by adjusting the structural parameters of the standing gear. The proposed structure is compatible with 3D printing technology and has potential applications in electromagnetic shielding.

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Creating Multiband and Broadband Metamaterial Absorber by Multiporous Square Layer Structure

Cited by 33 publications

References 22 publications

Ultra‐thin metamaterial perfect absorbers for single‐/dual‐/multi‐band microwave applications

Ultra‐thin metamaterial perfect absorbers for single‐/dual‐/multi‐band microwave applications

Simultaneous realization of the single-band and broadband terahertz perfect absorber using one piece of metamaterial resonator

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

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