Pacheco-Peña, VíctorOrazbayev, BakhtiyarTorres Landívar, VíctorBeruete Díaz, MiguelNavarro Cía, Miguel2016-07-272016-07-2720130003-6951 (Print)1077-3118 (Electronic)0.1063/1.4827876https://academica-e.unavarra.es/handle/2454/21072The following article appeared Pacheco-Pena, V., Orazbayev, B., Torres, V., Beruete, M., & Navarro-Cia, M. (n.d). Ultra-compact planoconcave zoned metallic lens based on the fishnet metamaterial. Applied Physics Letters, 103(18), and may be found at http://dx.doi.org/10.1063/1.4827876.A 1.5λ0 -thick planoconcave zoned lens based on the fishnet metamaterial is demonstrated experimentally at millimeter wavelengths. The zoning technique applied allows a volume reduction of 60% compared to a full fishnet metamaterial lens without any deterioration in performance. The structure is designed to exhibit an effective refractive index n = -0.25 at f = 56.7GHz (λ0 = 5.29 mm) with a focal length FL = 47.62 mm = 9λ0. The experimental enhancement achieved is 11.1dB, which is in good agreement with simulation and also with previous full fishnet metamaterial lenses and opens the door for integrated solutions.application/pdfeng© 2013 AIP Publishing LLC. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.Fishnet metamaterialMetamaterial lensinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess