Title :
144 GHz epsilon-near-zero metamaterial lens
Author :
Torres, Victor ; Orazbayev, Bakhtiyar ; Pacheco-Pena, Victor ; Teniente, Jorge ; Beruete, Miguel ; Navarro-Cia, Miguel ; Sorolla Ayza, Mario ; Engheta, Nader
Author_Institution :
MmW - THz - IR & Plasmonics Lab., Univ. Publica de Navarra, Pamplona, Spain
Abstract :
The focusing performance and radiation properties of an all-metallic epsilon-near-zero (ENZ) lens working at 144 GHz are shown. The lens is made of an array of narrow hollow rectangular waveguides working near cutoff, which effectively behaves as an anisotropic ENZ medium. A field enhancement of 5.61 dB and directivity of 17.6 dBi are measured with a good impedance matching with free space.
Keywords :
impedance matching; lens antennas; metamaterial antennas; rectangular waveguides; waveguide antenna arrays; all-metallic epsilon-near-zero metamaterial lens; anisotropic ENZ medium; directivity measurement; field enhancement; free space; frequency 144 GHz; impedance matching; narrow hollow rectangular waveguide array; Arrays; Face; Lenses; Metamaterials; Optical variables measurement; Optical waveguides; energy squeezing; epsilon-near-zero; metallic lenses; metamaterials; millimeter wave devices;
Conference_Titel :
Antennas and Propagation (EuCAP), 2015 9th European Conference on
Conference_Location :
Lisbon
