Compact penta-band metamaterial absorber: achieving polarization insensitivity and optimized bandwidth performance

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Optical and Quantum Electronics Pub Date : 2024-11-10 DOI:10.1007/s11082-024-07740-6

Neelam Singh, Reshmi Dhara, Sanjeev Yadav

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Abstract

This article describes narrow penta-band metamaterial absorbers that are polarization-insensitive for multi-band frequency applications. The present absorber cell is made up of four resonators. These resonators are imprinted on the top section of double-sided epoxy glass FR-4 covered with copper and the depth of FR-4 is 1.6 mm. The presented absorber design produces five separate absorption peaks specifically, 92.7% (peak-1) at 2.7 GHz, 94% (peak-2) at 6.5 GHz, 93% (peak-3) at 9.4 GHz, 98% (peak-4) at 13.3 GHz and 98% (peak-5) at 15.5 GHz, respectively in the process of normal occurrence. Additionally, the arrangement of the absorber pattern provides above 90% absorption peaks at all angles of incidence (before \({60}^\circ\)) in equally transversal-electric and transversal-magnetic polarisation conditions. The ongoing development and exploration of metamaterial design hold great promise for achieving unprecedented control over electromagnetic wave absorption, thus opening up exciting opportunities for a wide range of practical applications.

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紧凑型五波段超材料吸收器：实现偏振不敏感性和优化带宽性能

本文介绍了对偏振不敏感的窄五频带超材料吸收器，适用于多频带频率应用。本吸收器单元由四个谐振器组成。这些谐振器印制在双面环氧玻璃 FR-4 的顶部，上面覆盖铜，FR-4 的深度为 1.6 毫米。所介绍的吸收器设计在正常情况下会产生五个独立的吸收峰值，分别是 2.7 GHz 时的 92.7%（峰值-1）、6.5 GHz 时的 94%（峰值-2）、9.4 GHz 时的 93%（峰值-3）、13.3 GHz 时的 98%（峰值-4）和 15.5 GHz 时的 98%（峰值-5）。此外，在同样的横向电极化和横向磁极化条件下，吸收图案的排列在所有入射角（\({60}^\circ\)之前）都能提供 90% 以上的吸收峰值。超材料设计的不断发展和探索为实现对电磁波吸收的前所未有的控制带来了巨大希望，从而为广泛的实际应用开辟了令人兴奋的机会。

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来源期刊

Optical and Quantum Electronics 工程技术-工程：电子与电气

CiteScore

4.60

自引率

20.00%

发文量

810

审稿时长

3.8 months

期刊介绍： Optical and Quantum Electronics provides an international forum for the publication of original research papers, tutorial reviews and letters in such fields as optical physics, optical engineering and optoelectronics. Special issues are published on topics of current interest. Optical and Quantum Electronics is published monthly. It is concerned with the technology and physics of optical systems, components and devices, i.e., with topics such as: optical fibres; semiconductor lasers and LEDs; light detection and imaging devices; nanophotonics; photonic integration and optoelectronic integrated circuits; silicon photonics; displays; optical communications from devices to systems; materials for photonics (e.g. semiconductors, glasses, graphene); the physics and simulation of optical devices and systems; nanotechnologies in photonics (including engineered nano-structures such as photonic crystals, sub-wavelength photonic structures, metamaterials, and plasmonics); advanced quantum and optoelectronic applications (e.g. quantum computing, memory and communications, quantum sensing and quantum dots); photonic sensors and bio-sensors; Terahertz phenomena; non-linear optics and ultrafast phenomena; green photonics.