Journal
APPLIED PHYSICS LETTERS
Volume 105, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4903865
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Funding
- Spanish Government [CSD2008-00066, TEC2011-28664-C02-01, RYC-2011-08221]
- Spanish Ministerio de Educacion, Cultura y Deporte [FPU AP-2012-3796]
- Universidad Publica de Navarra
- Spanish Ministerio de Economia y Competitividad [FPI BES-2012-054909]
- Imperial College Junior Research Fellowship
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An all-metallic steerable beam antenna composed of an epsilon-near-zero (ENZ) metamaterial lens is experimentally demonstrated at 144 GHz (lambda(0) = 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 degrees. (C) 2014 AIP Publishing LLC.
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