Design, modeling, and fabrication of a new compact perfect metamaterial X-band absorber

Ahmed Nagy Asl,Bedir Yousif,Mahmoud Al-Zalabani

doi:10.1063/1.5143934

Ahmed Nagy Asl, Bedir Yousif + Show 1 more

Open Access

https://doi.org/10.1063/1.5143934

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Journal: AIP Advances	Publication Date: Feb 1, 2020
Citations: 3	License type: cc-by

Affiliation: Mansoura University, Kafrelsheikh University

Abstract

In this paper, a perfect metamaterial meander line absorber is designed, fabricated, and characterized by a waveguide measurement technique. The proposed metamaterial absorber of a double metal split ring resonator has a single-band absorption response in the microwave region. The characterization and analysis technique of the absorber illustrated a development in its bandwidth value, which minimizes both reflection and transmission coefficients for different upper metal lengths. Simulation and experimental results show that the absorber has a good perfect absorption in the frequency band between 8.5 GHz and 9 GHz. Moreover, the simulation results are in good agreement with the experimental measurements, which verify that this absorber can be used for the radar cross section and any electromagnetic compatibility at the X-band region.

Highlights

Smith et al showed in the initial microwave experiments1 that the metamaterials (MMs) are artificially active homogeneous electromagnetic structures composed of metals and dielectrics
The metamaterial absorber recently led to almost unity absorption of the improved bandwidth, as obtained by Ramya
The tests for single- and two-layer microwave absorbers have been examined for various coating thicknesses

Summary

INTRODUCTION

Smith et al showed in the initial microwave experiments that the metamaterials (MMs) are artificially active homogeneous electromagnetic structures composed of metals and dielectrics. The metamaterial absorber recently led to almost unity absorption of the improved bandwidth, as obtained by Ramya.. For the analysis of an absorbing metamaterial model, the waveguide measuring technique is used. The structure of the unit cell is shown, which consists of a split ring resonant (SRR) double metal and grounded lower layer separated by a dielectric FR4 substratum of height d = 0.8 mm and dielectric relative permittivity εr = 4.4 with a loss tangent of 0.02 and a copper thickness of 0.035 mm.

Z0 and

CHARACTERIZATION OF THE MM ABSORBER USING A WAVEGUIDE

FABRICATION AND MEASUREMENTS

COMPARISON BETWEEN FOUR UNIT CELLS OF THE MODEL STRUCTURE

Findings

CONCLUSION