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khalilpour, J., Dalili Oskouyi, H., Taghavi, S. (2021). Design, Simulation and Fabrication of Ultra-Wide-Band Electromagnetic Waves Absorber with Optimal Dimensions Based on Metamaterial. Electronic and Cyber Defense, 9(1), 55-61.
jafar khalilpour; H. R. Dalili Oskouyi; Seyyed ali Taghavi. "Design, Simulation and Fabrication of Ultra-Wide-Band Electromagnetic Waves Absorber with Optimal Dimensions Based on Metamaterial". Electronic and Cyber Defense, 9, 1, 2021, 55-61.
khalilpour, J., Dalili Oskouyi, H., Taghavi, S. (2021). 'Design, Simulation and Fabrication of Ultra-Wide-Band Electromagnetic Waves Absorber with Optimal Dimensions Based on Metamaterial', Electronic and Cyber Defense, 9(1), pp. 55-61.
khalilpour, J., Dalili Oskouyi, H., Taghavi, S. Design, Simulation and Fabrication of Ultra-Wide-Band Electromagnetic Waves Absorber with Optimal Dimensions Based on Metamaterial. Electronic and Cyber Defense, 2021; 9(1): 55-61.

Design, Simulation and Fabrication of Ultra-Wide-Band Electromagnetic Waves Absorber with Optimal Dimensions Based on Metamaterial

الکترومغناطیس کاربردی
Volume 9, Issue 1 - Serial Number 22, May 2021, Pages 55-61    PDF (874.52 K)
Document Type: Original Article
Authors
jafar khalilpour* 1; H. R. Dalili Oskouyi* 2; Seyyed ali Taghavi3
1Associate Professor, Faculty of Electrical Engineering, Khatam Al-Anbia University of Air Defense, Tehran, Iran
2electrical faculty. khatam-ol-anbia air defense university. Tehran, Iran
3M.Sc., Faculty of Electrical Engineering, Khatam Al-Anbia University of Air Defense, Tehran, Iran
Receive Date: 27 May 2020,  Revise Date: 18 July 2020,  Accept Date: 02 August 2020 
Abstract
In this paper, an ultra-wide-band Metamaterial Absorber with simple structure and optimum dimensions and thickness is proposed for X-band applications. This structure design with using three split circular rings and its dimensions optimized with HFSS. The unit cell of the proposed absorber has low dimensions and thickness (thickness 0.066λ_0 at 10 GHz central frequency). An array of 24 × 24 elements of the proposed metamaterial absorber with dimensions of  〖170×170 mm〗^2 was constructed and evaluated in practice. The structural parameters of resultant Metamaterial including permeability (μ) and permittivity (ε) are extracted by using Nicolson- Rose method. The results of simulation and practical measurement, show that, almost in total X-band rang (of 7.3 GHz to 11.5 GHz), the structure of the absorption bandwidth is 90%. Also, the studing of the results shows that, there is a good agreement between the acting measurement and simulation. The designed structure was also tested for the angles of perpendicular and obliquely incident electromagnetic wave, that, up to 45 degrees, absorption bandwidth did not change much.
Keywords
Metamaterial Absorber; Split Ring; Absorption Band
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