Title :
A zero beam-squinting leaky-wave antenna using NRI-TL metamaterials
Author :
Kossifos, K.M. ; Antoniades, M.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Cyprus, Nicosia, Cyprus
Abstract :
A planar zero beam-squinting leaky-wave antenna is proposed at 5 GHz, consisting of a periodic arrangement of negative-refractive-index transmission-line (NRI-TL) metamaterial unit cells. The antenna is centre-fed through a 50-ohm transmission line, and the two constituent parallel branches of the antenna each consist of twelve 100-ohm NRI-TL metamaterial unit cells. Each branch of the antenna radiates a beam in opposite directions, and the combination of the two beams results in a symmetric broadside beam over a wide zero-scanning bandwidth of 1.2 GHz (24%).
Keywords :
antenna feeds; electromagnetic metamaterials; leaky wave antennas; microwave antennas; transmission lines; NRI-TL metamaterial unit cells; antenna centre fed; bandwidth 1.2 GHz; frequency 5 GHz; negative refractive index transmission line; periodic arrangement; planar zero beam squinting leaky wave antenna; resistance 100 ohm; resistance 50 ohm; symmetric broadside beam; transmission line; Bandwidth; Impedance; Leaky wave antennas; Metamaterials; Microstrip; leaky-wave antenna; metamaterial; negative refractive index; zero beam squinting;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
