Title :
An ultra-thin dual-band polarization-independent metamaterial absorber for EMI/EMC applications
Author :
Munaga, Praneeth ; Ghosh, Saptarshi ; Bhattacharyya, Somak ; Chaurasiya, Devkinandan ; Srivastava, Kumar Vaibhav
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Kanpur, Kanpur, India
Abstract :
In this paper, an ultra-thin polarization-independent dual-band metamaterial absorber has been presented in microwave frequency regime. The unit cell structure is composed of tetra-arrow cave structure in the top layer imprinted on a grounded dielectric substrate. The geometrical parameters have been optimized in such a way that near-unity absorption takes place at two different frequency bands (C and X-bands). The proposed structure is polarization-insensitive as well as wide-angle absorptive (upto 60°) for both TE and TM polarizations. The structure is fabricated on FR4 substrate, and experimental results are in good agreement with simulated responses. The designed absorber is ultra-thin, compact and appears to be potentially instructive for various EMI/EMC applications.
Keywords :
electromagnetic compatibility; electromagnetic interference; electromagnetic metamaterials; electromagnetic wave absorption; electromagnetic wave polarisation; C band; EMI-EMC applications; FR4 substrate; TE polarization; TM polarization; X band; dual-band metamaterial absorber; geometrical parameters; grounded dielectric substrate; independent metamaterial absorber; microwave frequency regime; near-unity absorption; tetra-arrow cave structure; ultrathin dual band polarization; unit cell structure; Absorption; Antenna measurements; Dual band; Electric fields; Magnetic fields; Metamaterials; Surface impedance; EMI/EMC applications; dual-band; metamaterial absorber; polarization insensitive;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
