Wide-angle stable polarization-independent dual-band metamaterial absorber for 5G n77/n79 energy harvesting applications
Küçük Resim Yok
Tarih
2026
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Iop Publishing Ltd
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
In this study, a compact dual-band square-ring resonator (SRR) based metamaterial absorber (MMA) operating in the 5G NR n77 (3.3-4.2 GHz) and n79 (4.4-5.0 GHz) frequency bands is proposed for microwave energy harvesting applications. The proposed MMA consists of two nested square-ring resonators rotated by 45 degrees with respect to the x-axis, four auxiliary square rings placed at the corners of the inner resonator, an FR-4 substrate, and a continuous copper ground plane. Numerical simulations demonstrate absorption levels of 99.8% at resonance frequencies of 3.63 GHz and 4.67 GHz. The absorption mechanism is investigated through surface current distributions, electromagnetic field analysis, and effective medium parameter retrieval. Furthermore, this study introduces a physics-driven optimization strategy based on controlled doublet resonance, which enhances angular stability at oblique incidence angles without increasing structural complexity. The proposed design simultaneously achieves near-perfect absorption (99.8%), complete polarization independence (0 degrees-90 degrees), and superior angular stability up to 70 degrees for both TE and TM modes on a low-cost FR-4 substrate. These features, along with a compact footprint (EMR of 4.12), offer an economically viable and high-performance electromagnetic surface specifically optimized for large-scale 5G n77/n79 energy harvesting applications.
Açıklama
Anahtar Kelimeler
[Keyword Not Available]
Kaynak
Physica Scripta
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
101
Sayı
19
