A review of graphene-based broad bandwidth microwave absorbing textile-based composites in the low-frequency range

Abstract

The range and strength of Electromagnetic Wave loss are increasing with the development of electronic technology in intellectualization and diversification. Extensive research is focused on high-frequency microwave absorbersbut rarely on low-frequency ones. However, the shield of low-frequency microwave interference is bulky and complicated. It is necessary to adopt new structural composites with lightweight, porous, or multi-layer magneto-dielectric synergistic to obtain lighter, thinner, broader bandwidth, and strong absorption absorbers in the low-frequency range. The porous and multi-layer textiles would extend the Microwave (M. W.) transmitting pathway. The prepared M. W. textile-based composites possess broad bandwidth and strong absorption in the low-frequency range when magneto-dielectric synergistic functional particles have embedded in the textiles. This paper reviewed the modified graphene-based absorbers (GBAs), the hybrids combined GBAs with the low-frequency magnetic loss absorbers (LFMLAs), and the textile-based composites added by the complex combined GBAs with LFMLAs (GBAs/LFMLAs). The prepared GBAs/LFMLAs textile-based composites are broad bandwidth, lightweight, small thickness, and strong absorption materials in the low-frequency range. The prepared GBAs/LFMLAs textile-based microwave absorbers (MWAs) may expand the application scope of MWAs and promote their economic benefit. The GBAs/LFMLAs textile-based composites may propose a new strategy of broad bandwidth MWAs in the low-frequency range.

A Facile Route Preparation of Fe3O4/MWCNT/ZnO/PANI Nanocomposite and its Characterization for Enhanced Microwave Absorption Properties

“…To address this issue, researchers have explored various shielding mechanisms, including developing materials that can absorb microwaves. [1][2][3] These materials include graphene-based composites, [4][5][6] ferrite-based composites, [7][8][9] and conductive polymer-based composites. [10,11] The objective of this development is to reduce the reflection loss (RL) and enhance the electromagnetic bandwidth (EB) absorption of a material.…”

A coral-like nano-PCF composite as a broad-bandwidth microwave absorber

“…With the advancement of modern wireless communication, in particular the increasing demand for 5G technology, different types of microwave absorbers (MWAs) have been developed to shield against the broadening bandwidth of electromagnetic interference (EMI) in the microwave frequency range 2–18 GHz. 1,2…”

“…With the advancement of modern wireless communication, in particular the increasing demand for 5G technology, different types of microwave absorbers (MWAs) have been developed to shield against the broadening bandwidth of electromagnetic interference (EMI) in the microwave frequency range 2-18 GHz. 1,2 A magneto-dielectric synergistic microwave absorber formed by coating polyaniline (PANI) on the surface of CoFe 2 O 4 (CFO), has demonstrated excellent microwave absorption due to the dielectric loss of PANI synergized with the great magnetic loss of CFO, 3,4 in which PANI and CFO consumed the electric and magnetic components of the microwaves, respectively, and the microwave absorption was enhanced when they were synergized with each other. 5 Praveena et al 6 synthesized a PCF composite to shield against EMI.…”