Enhancing the Performance of the Microwave Absorbing Materials by Using Dielectric Resonator Arrays

AL-Zoubi, Omar H.; Naseem, Hameed A.

doi:10.1155/2017/3658247

Cited by 12 publications

(7 citation statements)

References 17 publications

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“…Authors have concluded that a flat layer of nanopowdered Fe 20 Ni 8 material with thickness of 5 mm backed by perfect electric conductor (PEC) shows reflection loss (RL) peak as low as − 50 dB and 3 GHz 10-dB bandwidth, whereas the same material when shaped into MA-CDR array, of height of 4 mm can achieve as low as − 50 dB RL peak and 12 GHz 10-dB RL bandwidth. However, the performance as well as thickness can be improved using CDR structures with advanced materials [75].…”

Section: Geometry-based Absorbersmentioning

confidence: 99%

Exploring the feasibility of development of nanomaterial-based microwave absorbers

Rani

Marwaha

2018

Int Nano Lett

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Advancement in the use of microwave electronics by the wireless devices, networks' server and switches, wireless antenna systems, and mobile phone base station potentially increased the radio-frequency interference. Effective elimination of this electromagnetic pollution is very necessary for proper working of electronic equipments. Microwave absorbers serve the above purpose leading to have enormous commercial and defence applications, for antenna shielding and laboratory testing of antenna. Researchers are, therefore, paying much attention on the study and fabrication of different materials and their shapes so as to use them as an absorber which ideally exhibits properties such as (1) strong absorption; (2) minimize the reflection of microwaves at air to absorber interface; (3) broader bandwidth; (4) low weight and thickness; (5) ignition at very high temperature; (6) frequency tunability; and (7) transparent and cost effective. In this paper, absorber designs based on materials and geometries proposed by number of researchers have been extensively reviewed. The preamble presented here can be explored to design novel absorbers combining material and geometry-based designs for enhanced performance to meet the future challenges.

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Section: Geometry-based Absorbersmentioning

confidence: 99%

Exploring the feasibility of development of nanomaterial-based microwave absorbers

Rani

Marwaha

2018

Int Nano Lett

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“…As devices designed to effectively absorb incident electromagnetic radiation by transforming it into ohmic heat or other forms of energy, electromagnetic (EM) wave absorbers are often used for shielding (Ahmad et al, 2019). The operating frequencies of EM absorbers previously demonstrated have covered the microwave band (Al-zoubi & Naseem, 2017;H. Chen et al, 2018;M.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Simulation of Structured Microwave Absorber Based on Conductive Abs 3d Printing Filament

Abdullahi

Ali

2021

FJS

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Electromagnetic absorbing materials with broadband, lightweight, wide-angle, and polarization-insensitive characteristics attracts extensive research interest recently, due to rapid advancement in radar detection techniques and communication devices. Three-dimensional printing is being employed to realize cost-effective structured electromagnetic absorbers that has lately become a common practice of improving radar stealth performance and shielding effectiveness. Structured absorbers permit realization of desired absorption characteristics by careful design of their geometrical structures. In this study, a two-layer structured microwave absorber using conductive ABS polymer is simulated. COMSOL Multiphysics environment is used to investigate the absorption characteristics of the designed structure. Under normal incidence, simulation results revealed at least 90% of absorption from 7.2 GHz to 18.0 GHz for both Transverse Electric (TE) and Transverse Magnetic (TM) polarizations. Oblique incidence results for TE polarization indicate that the absorption rate is more than 90% in the whole range of 7.2–18 GHz frequency band up to 450 while the absorption rate is more than 80% for 600 incident waves. The absorption rate is more than 90% in the 7.2-18 GHz range for oblique incidences of up to 300 only for TM polarization, but greater than 70% at 450 incident angles. Additionally, the designed absorber is independent of the polarization of the incident wave. As a result of the exhibited favourable absorption characteristics, the studied absorber provides great potentials for its experimentation and practicability using the low-cost 3D printing manufacturing process

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“…Compared with EM shielding material, microwave-absorbing materials (MAM) are powerful alternatives to eliminate pollution due to their effectiveness in dissipating microwave energy without any secondary pollution. In general, MAM and microwave-absorbing structures should satisfy general requirements that are enlisted as follows: it should (i) minimize the reflection of EM waves at the air to absorber interface; (ii) have strong absorption of EM waves; (iii) have broad bandwidth and angular response; (iv) have low weight and thickness [4]. Unfortunately, meeting these competing requirements simultaneously is a challenging task.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, meeting these competing requirements simultaneously is a challenging task. To meet these objectives and enhance the efficiency of MAM, tedious and extensive techniques have been suggested [4]. These techniques can be categorized into two main categories: material and geometry based.…”

Section: Introductionmentioning

confidence: 99%

Microwave absorption study of dried banana leaves-based single-layer microwave absorber

Pattanayak

Laskar

Sahoo

2020

Int. J. Microw. Wireless Technol.

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The ever-increasing use of electronic devices leads to a dangerous upsurge in the emission of microwave radiation; this has drawn appreciable concern in the fabrication of eco-friendly microwave absorber (MA) and it can be a prospective alternative. Present work, in the quest for possible alternatives, explores carbon-rich agricultural residues such as dry banana leaves as a microwave-absorbing material. The variation of microwave absorption efficiency with an increase in the percentage of resin has been already reported. An extensive study on the microwave absorption efficiency of dried banana leaves with sample preparation and reflectivity analysis by hardware measurement, and simulative analysis using CST microwave studio suite for different thicknesses in the frequency range of 1–20 GHz has been also explored in the present work. Single-layer MA thickness variation establishes different microwave absorption performance.

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Enhancing the Performance of the Microwave Absorbing Materials by Using Dielectric Resonator Arrays

Cited by 12 publications

References 17 publications

Exploring the feasibility of development of nanomaterial-based microwave absorbers

Exploring the feasibility of development of nanomaterial-based microwave absorbers

Design and Performance Simulation of Structured Microwave Absorber Based on Conductive Abs 3d Printing Filament

Microwave absorption study of dried banana leaves-based single-layer microwave absorber

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