Sáenz Sáinz, ElenaIkonen, PekkaGonzalo García, RamónEderra Urzainqui, ÍñigoTretyakov, Sergei A.Maagt, Peter de2017-06-292017-06-2920071-4244-0775-310.1109/LAPC.2007.367444https://academica-e.unavarra.es/handle/2454/24550Trabajo presentado a la 2007 Loughborough Antennas and Propagation Conference. Reino Unido, 2007.In this paper, the radiation performance of a low profile multi-frequency dipole antenna array with a planar meta-surface is presented. The meta-surface consists of two closely located parallel grids of short dipoles and one grid of continuous wires in between. By tuning a dipole to the pass band of the superstrate and due to the magnetic dipole moments induced in the unit cells, a uniform illumination is achieved and therefore an enhancement of the directivity. Placing a second meta-surface under the dipole with the stop-band tuned to the working frequency, the back radiation is reduced. By combining low and high resonant-frequency unit cells and tuning dipoles to these frequencies, a double-frequency array is formed.4 p.application/pdfeng© 2007 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Multi-frequency dipole antenna arraysPlanar meta-surfacesContribución a congreso / Biltzarrerako ekarpenaAcceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess