Frequency and bandwidth modulation of a wide band-stop metamaterial for EMI shielding applications
2
Issued Date
2024-05-01
Resource Type
ISSN
00303992
Scopus ID
2-s2.0-85181733527
Journal Title
Optics and Laser Technology
Volume
172
Rights Holder(s)
SCOPUS
Bibliographic Citation
Optics and Laser Technology Vol.172 (2024)
Suggested Citation
Hasan M.M., Moniruzzaman M., Kirawanich P., Alam T., Yahya I.B., Alrashdi A.M., Mobarak M., Soliman M.S., Islam M.T. Frequency and bandwidth modulation of a wide band-stop metamaterial for EMI shielding applications. Optics and Laser Technology Vol.172 (2024). doi:10.1016/j.optlastec.2023.110515 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/95696
Title
Frequency and bandwidth modulation of a wide band-stop metamaterial for EMI shielding applications
Corresponding Author(s)
Other Contributor(s)
Abstract
In this paper, a µ-near-zero wide band-stop metamaterial (MM) shield is conducted for electromagnetic interference (EMI) shielding purposes in the C- and X-band. The proposed design intends to employ a shared MM structure to serve two distinct microwave bands with extended shielding bandwidth. The proposed structure consists of metal strip coupled four identical quartiles based unique mirror symmetric resonator and designed on a low-loss Rogers 5880 substrate within a compact physical dimension of 7.5 mm × 7.5 mm × 1.575 mm. The speciality of the proposed MM is its wide band-stop functionality with maximum shielding bandwidth and effectiveness of 4.33 GHz and 66.6 dB, respectively. Moreover, four shorting metal strips among adjacent quartiles can control the shielding spectrum from C-band to X-band with an outstanding band-stop enhancement capability of 170.63 %, which significantly outperforms the existing MMs. Therefore, the proposed MM structure can be utilized for two distinct wide frequency spectrums shielding by introducing simple shorting metallic strips. The electromagnetic radiation shielding phenomena are also explained using surface current and electric and magnetic field distribution. The proposed MM prototypes are fabricated and experimentally verified with numerical results. The promising shielding performance of the developed MM demonstrates the potentiality for shielding undesired electromagnetic radiation.