Quad-Band Metamaterial Perfect Absorber with High Shielding Effectiveness Using Double X-Shaped Ring Resonator

This study assesses quad-band metamaterial perfect absorbers (MPAs) based on a double X-shaped ring resonator for electromagnetic interference (EMI) shielding applications. EMI shielding applications are primarily concerned with the shielding effectiveness values where the resonance is uniformly or...

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Bibliographic Details
Published in:Materials 2023-06, Vol.16 (12), p.4405
Main Authors: Jahan, Mst Ishrat, Faruque, Mohammad Rashed Iqbal, Hossain, Md Bellal, Khandaker, Mayeen Uddin, Elsayed, Fahmi, Salman, Mohammad, Osman, Hamid
Format: Article
Language:English
Subjects:
Absorbers
Absorbers (materials)
Absorption
Analysis
Circuits
Design
Dielectrics
Effectiveness
Electromagnetic interference
Electromagnetic shielding
Electromagnetism
Gold
Metamaterials
Nitrogen dioxide
Resonance
Resonators
Satellite communications
Sensors
Substrates
Technology application
Thickness
Unit cell
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Summary:This study assesses quad-band metamaterial perfect absorbers (MPAs) based on a double X-shaped ring resonator for electromagnetic interference (EMI) shielding applications. EMI shielding applications are primarily concerned with the shielding effectiveness values where the resonance is uniformly or non-sequentially modulated depending on the reflection and absorption behaviour. The proposed unit cell consists of double X-shaped ring resonators, a dielectric substrate of Rogers RT5870 with 1.575 mm thickness, a sensing layer, and a copper ground layer. The presented MPA yielded maximum absorptions of 99.9%, 99.9%, 99.9%, and 99.8% at 4.87 GHz, 7.49 GHz, 11.78 GHz, and 13.09 GHz resonance frequencies for the transverse electric (TE) and transverse magnetic (TM) modes at a normal polarisation angle. When the electromagnetic (EM) field with the surface current flow was investigated, the mechanisms of quad-band perfect absorption were revealed. Moreover, the theoretical analysis indicated that the MPA provides a shielding effectiveness of more than 45 dB across all bands in both TE and TM modes. An analogous circuit demonstrated that it could yield superior MPAs using the ADS software. Based on the findings, the suggested MPA is anticipated to be valuable for EMI shielding purposes.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma16124405