Summary:
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.
Keywords: Leaky-wave antennas (LWAs), metamaterials, split-ring resonator (SRR), slotline.
JCR Impact Factor and WoS quartile: 1,948 - Q2 (2013); 4,200 - Q2 (2022)
DOI reference:
https://doi.org/10.1109/LAWP.2013.2287525
Published on paper: 2013.
Published on-line: October 2013.
Citation:
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, 2013. [Online: October 2013]
