Mechanical 144GHz beam steering with all-metallic epsilon-near-zero lens antenna

Research output: Contribution to journalArticlepeer-review


  • V. Pacheco-Peña
  • V. Torres
  • B. Orazbayev
  • M. Beruete
  • M. Sorolla
  • N. Engheta

Colleges, School and Institutes

External organisations

  • Universidad Pública de Navarra
  • University of Pennsylvania


An all-metallic steerable beam antenna composed of an e-near-zero (ENZ) metamaterial lens is experimentally demonstrated at 144 GHz (λ0=2.083 mm). The ENZ lens is realized by an array of narrow hollow rectangular waveguides working just near and above the cut-off of the TE10 mode. The lens focal arc on the xz-plane is initially estimated analytically as well as numerically and compared with experimental results demonstrating good agreement. Next, a flange-ended WR-6.5 waveguide is placed along the lens focal arc to evaluate the ENZ-lens antenna steerability. A gain scan loss below 3 dB is achieved for angles up to ±15°.


Original languageEnglish
Article number243503
JournalApplied Physics Letters
Issue number24
Publication statusPublished - 15 Dec 2014

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