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A Thin C-Band Polarization and Incidence Angle-Insensitive Metamaterial Perfect Absorber

Signal Theory and Communications Area, Department of Electrical Engineering, University of Oviedo, Multi-Purpose Building, Module 8, Gijón 33203, Asturias, Spain
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Academic Editor: Steven Suib
Materials 2015, 8(4), 1666-1681; https://doi.org/10.3390/ma8041666
Received: 30 January 2015 / Revised: 16 March 2015 / Accepted: 2 April 2015 / Published: 13 April 2015
(This article belongs to the Section Manufacturing Processes and Systems)
A novel metamaterial absorber design able to operate in the C frequency band is presented, along with an analysis and a method to improve both its bandwidth and its angular stability. Simulation results for a FR4-based design are shown for comparison with existing designs. In addition, a simplified equivalent circuit is provided for a better understanding of the great angular stability and wide bandwidth exhibited by the proposed structure. Moreover, simulations, manufacturing and measurements of a thinner and more flexible metamaterial absorber, keeping the angular stability of the former one, while providing a wide bandwidth, are presented. View Full-Text
Keywords: metamaterial absorber (MMA); double-negative media (DNM); negative refractive index (NIR); left-handed media (LHM); polarization insensitive; angular stability metamaterial absorber (MMA); double-negative media (DNM); negative refractive index (NIR); left-handed media (LHM); polarization insensitive; angular stability
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Fernández Álvarez, H.; De Cos Gómez, M.E.; Las-Heras, F. A Thin C-Band Polarization and Incidence Angle-Insensitive Metamaterial Perfect Absorber. Materials 2015, 8, 1666-1681.

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