Design of a Quad-Band Wide-Angle Microwave Metamaterial Absorber

• Published in: Journal of electronic materials Vol. 46; no. 1; pp. 370 - 376
• Main Authors: Ren, Yu-Hui, Ding, Jun, Guo, Chen-Jiang, Qu, Yan, Song, Yi-Chuan
• Format: Journal Article
• Language: English
• Published: New York Springer US 2017; Springer Nature B.V
• Subjects: Characterization and Evaluation of Materials; Chemistry and Materials Science; Electronics; Electronics and Microelectronics; Instrumentation; Materials Science; Optical and Electronic Materials; Solid State Physics; Metamaterial absorber; quad-band; polarization insensitive; wide-angle
• ISSN: 0361-5235; 1543-186X
• DOI: 10.1007/s11664-016-4852-3

We report the design, analysis, fabrication, and measurement of a quad-band microwave metamaterial absorber that exhibits four distinct high absorption peaks at specific resonance frequencies. The proposed structure consists of a metallic hexagonal patch layer on top of a dielectric substrate with a metallic film as bottom layer. The simulation and experimental results show that the absorber presents four distinctive perfect (>90%) absorption peaks up to incidence angle of 40° for both transverse electric and transverse magnetic modes. The results prove that this kind of quad-band absorber has good performance over a wide incidence angle range and is polarization insensitive. Moreover, the experimental and numerical simulation results are essentially in agreement.