Sáenz Sáinz, ElenaGonzalo García, RamónEderra Urzainqui, ÍñigoMaagt, Peter de2017-06-022017-06-022005https://academica-e.unavarra.es/handle/2454/24461Trabajo presentado al XX Symposium de la Unión Científica Internacional de Radio (URSI'05). Gandía, 2005.In this paper, results showing the experimental verification of the gain improvement of a rectangular waveguide antenna when a left-handed material (LHM) is used as superstrate are presented. The improvement has been characterized by means of measuring the increase of transmission (S21 parameter) obtained when this LHM is placed between two open-ended rectangular waveguide antennas. An average increase of transmission of about 6.5 d.B has been obtained. Besides, improvements in the radiation patterns of a rectangular waveguide with a LH superstrate are analyzed. An enhancement of 3.5 dB in the directivity and a reduction of 15 dB in the back radiation have been obtained.4 p.application/pdfspaRectangular waveguide antennasLenft-handed materials (LHM)Superstratesinfo:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/openAccess