A new composite right/left-handed (CRLH) slotline leaky-wave antenna (LWA) is proposed. The antenna, implemented by loading a slotline with split-ring resonators (SRRs), is designed to exhibit a balanced dispersion relation, with a continuous transition between the left-handed and the right-handed bands at 2.5 GHz. Since the periodicity of the structure is much less than a wavelength, the proposed LWA belongs to the family of quasi-uniform LWAs, and it radiates from the fundamental mode (contrary to periodic LWAs). Measured and simulated radiation patterns, gain, and scanning angle are reported for a 17-cell LWA. The experimental results demonstrate the potential of the LWA to continuously radiate from backward (- 50°) to forward (+60°) scanning angles, with maximum gains of 7.1 and 11.3 dB in the left- and right-handed bands, respectively, and specular radiation patterns.
Palabras clave: Leaky-wave antennas (LWAs), metamaterials, split-ring resonator (SRR), slotline.
IEEE Antennas and Wireless Propagation Letters. Volumen: 12 Páginas: 1424-1427
Índice de impacto JCR y cuartil Scopus: 1.948 - Q1 (2013); 3.448 - Q1 (2017).
Referencia DOI: 10.1109/LAWP.2013.2287525
Publicado en papel: Octubre 2013.
G. Zamora, S. Zuffanelli, F. Paredes, F.J. Herraiz-Martínez, F. Martín, J. Bonache. Fundamental mode leaky-wave-antenna (LWA) using slot line and split-ring-resonator(SRR)-based metamaterials. IEEE Antennas and Wireless Propagation Letters. vol. 12, pp. 1424-1427, Octubre 2013.