All-metallic ε-near-zero (ENZ) lens based on ultra-narrow hollow rectangular waveguides

Research output: Chapter in Book/Report/Conference proceedingConference contribution


  • B. Orazbayev
  • V. Torres
  • V. Pacheco-Peña
  • P. Rodriguez
  • J. Teniente
  • M. Beruete
  • M. Sorolla
  • N. Engheta

Colleges, School and Institutes

External organisations

  • Universidad Pública de Navarra
  • University of Pennsylvania


Here we perform numerical and experimental investigation of plano-concave all-metallic ε-near-zero (ENZ) lens with operational frequency f = 144 GHz. The ENZ lens is achieved by stacking an array of narrow hollow rectangular waveguides working near cut-off frequency. Focusing and radiation properties are numerically analyzed and measured. The enhancement of 5.61 dB and directivity of 17.6 dBi are shown. Good agreement between experimental and numerical results is demonstrated.


Original languageEnglish
Title of host publicationMediterranean Microwave Symposium
Publication statusPublished - 17 Apr 2015
Event2014 14th Mediterranean Microwave Symposium, MMS 2014 - Marrakech, Morocco
Duration: 12 Dec 201414 Dec 2014


Conference2014 14th Mediterranean Microwave Symposium, MMS 2014


  • ENZ media, metamaterial lenses, millimeter waves

ASJC Scopus subject areas