Fundamental-mode leaky-wave antenna (LWA) using slotline and split-ring-resonator (SRR)-based metamaterials

Gerard Zamora, Simone Zuffanelli, Ferran Paredes, Francisco Javier Herraiz-Martinez, Ferran Martin, Jordi Bonache

Research output: Contribution to journalArticleResearchpeer-review

30 Citations (Scopus)


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^{\circ}) to forward ({+}60^{\circ}) scanning angles, with maximum gains of 7.1 and 11.3 dB in the left-and right-handed bands, respectively, and specular radiation patterns. © 2013 IEEE.
Original languageEnglish
Article number6648680
Pages (from-to)1424-1427
JournalIEEE Antennas and Wireless Propagation Letters
Publication statusPublished - 29 Nov 2013


  • Leaky-wave antennas (LWAs)
  • metamaterials
  • slotline
  • split-ring resonator (SRR)


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