Wideband Metal-Dielectric Multilayer Microwave Absorber based on a Single Step FDM Process

Xhoandri, Lleshi; Grelot, Roman; Hoang, Thi Quynh Van; Loiseaux, Brigitte; Lippens, D.

doi:10.23919/eumc.2019.8910777

Cited by 17 publications

(10 citation statements)

References 15 publications

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“…The same amount of absorptivity is detected for 8.1-17.8 GHz, with FB of 0.74 in AC. The difference in the NAC measurement result compared to our previous work [30] can be explained by various improvements of the setup environment to increase the measurement dynamic and reduce the interferences. This updated result was validated with a good correlation with the measurements in the anechoic chamber and with the simulation.…”

Section: A Characterization In Normal Incidencementioning

confidence: 66%

“…For the dielectric layers, the filament Preperm Dk4 [34] is used. Differently from [30], where the measurements of the permittivity was performed with a rectangular cavity directly on the filament, in this paper the transmission method using a coaxial line [35] has been used to characterize a printed sample. A permittivity value of 4.6 was obtained on a 2mm-thickness printed torus over the frequency band of 100 MHz -18 GHz.…”

Section: Fdm Fabrication and X-ray Analysismentioning

confidence: 99%

“…The unit cell is composed by stacking 10 pairs of dielectric and conductive square layers on a ground plane as shown in Fig. 1 [30]. The single cavity is completely defined by four parameters, as shown in Fig.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Design and Full Characterization of a 3-D-Printed Hyperbolic Pyramidal Wideband Microwave Absorber

Xhoandri¹,

Hoang²,

Loiseaux³

et al. 2021

Antennas Wirel. Propag. Lett.

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Section: A Characterization In Normal Incidencementioning

confidence: 66%

Section: Fdm Fabrication and X-ray Analysismentioning

confidence: 99%

See 1 more Smart Citation

Design and Full Characterization of a 3-D-Printed Hyperbolic Pyramidal Wideband Microwave Absorber

Xhoandri¹,

Hoang²,

Loiseaux³

et al. 2021

Antennas Wirel. Propag. Lett.

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“…One example of a multilayer system involves a unit cell made up of a stack of 20 metallic patches, reducing in size towards the top of the stack, separated by dielectric layers. [12] It was shown that by using such a stacked structure, it was possible have an absorption level around 90% for a frequency range of 7.6 GHz to 17.4 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…In subsequent years, these simple absorbers have been adapted to use a range of different periodic patterns, [7]- [11] whilst various efforts have been made to add additional resonances or to broaden the bandwidth, for example by using multi-layer structures [12] or multi-resonant unit cells. [13]- [15] Multi-layer structures are an extremely effective method for broadening the absorption bandwidth.…”

Section: Introductionmentioning

confidence: 99%

Exploring microwave absorption by non-periodic metasurfaces

Hamilton

Hooper

Lawrence³

2021

AEM

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In recent years there has been a large body of work investigating periodic metasurface microwave absorbers. However, surprisingly few investigations have focused on the absorption performance of similar non-periodic designs. In this work, the electromagnetic response of a large area (310 mm x 310 mm) microwave absorber that lacks a global periodicity is experimentally studied. The top metallic layer of the ultra-thin (0.3 mm) absorber is structured with rectangular patches given by a procedurally generated non-periodic pattern, known as the toothpick sequence. The specular reflectivity of both p-polarised and s-polarised incident radiation shows coupling to an additional low frequency mode when compared to a standard square patch periodic absorber. To further explore the coupling efficiency of such non-periodic absorbers, finite element models were used to investigate the influence of increasing sample size.

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Ultra‐Broadband and Wide‐Angle Metamaterial Absorber with Carbon Black/Carbonyl Iron Composites Fabricated by Direct‐Ink‐Write 3D Printing

et al. 2023

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This study proposes the fabrication of an asymmetric woodpile metamaterial absorber using direct-ink-writing 3D printing technology. The prepared inks are compounded using two loss fillers: carbon black and carbonyl iron powder. The synergistic effect enhances the electromagnetic loss performance and the synergistic mechanism is analyzed. The designed asymmetric woodpile absorber has a wider bandwidth than a simple tetragonal woodpile, and the advantage presented by the asymmetric woodpile arrangement overcomes the local impedance mismatch. A simulation is then performed, which demonstrates that the designed asymmetric woodpile metamaterial with a thickness of 8.6 mm can achieve a À10 dB absorbing bandwidth in the frequency range of 3.9-18 GHz, and the maximum reflection loss reaches up to À39 dB. Additionally, the absorber exhibits excellent angular performance and the absorption bandwidth of the transverse electric polarization or transverse magnetic polarization waves can reach more than 10 GHz with incident angles from 0°to 50°. Furthermore, the manufacturing process of the absorber is simple, efficient, and inexpensive, which presents considerable potential for its widespread implementation in practical engineering applications.

show abstract

Wideband Metal-Dielectric Multilayer Microwave Absorber based on a Single Step FDM Process

Cited by 17 publications

References 15 publications

Design and Full Characterization of a 3-D-Printed Hyperbolic Pyramidal Wideband Microwave Absorber

Design and Full Characterization of a 3-D-Printed Hyperbolic Pyramidal Wideband Microwave Absorber

Exploring microwave absorption by non-periodic metasurfaces

Ultra‐Broadband and Wide‐Angle Metamaterial Absorber with Carbon Black/Carbonyl Iron Composites Fabricated by Direct‐Ink‐Write 3D Printing

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