Sáenz Sáinz, ElenaGonzalo García, RamónEderra Urzainqui, ÍñigoMaagt, Peter de2017-06-022017-06-022005https://academica-e.unavarra.es/handle/2454/24462Trabajo presentado al Workshop on Metamaterials for Microwave and Optical Technologies. San Sebastián, 2005.In this paper, the radiation performances of different antenna configuration based on Left-Handed superstrates are presented. First of all, the behaviour of a Left- Handed (LH) unit cell is analysed, showing a resonant response with pass band and stop band frequencies. In order to improve the radiation performances of a single dipole, ie., to increase the directivity and efficiency and to reduce the back radiation, diverse LH superstrates working at the resonant frequency of the dipole are analysed. With these configurations, improvements in terms of directivity higher than 6 dB with efficiency closer to 100 % have been obtained.1 p.application/pdfengMultifrequency antenna arraysLeft-handed superstratesContribución a congreso / Biltzarrerako ekarpenaAcceso abierto / Sarbide irekiainfo:eu-repo/semantics/openAccess