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Title: Restoring in-phase emissions from non-planar radiating elements using a transformation optics based lens

The broadband directive in-phase emission from an array of sources conformed cylindrically is numerically and experimentally reported. Such manipulation is achieved through the use of a lens designed by transformation optics concept. The all-dielectric lens prototype is realized through three-dimensional (3D) polyjet printing and presents a graded refractive index. A microstrip antenna array fabricated using standard lithography techniques and conformed on a cylindrical surface is used as TE-polarized wave launcher for the lens. To experimentally demonstrate the broadband focusing properties and in-phase directive emissions, both the far-field radiation patterns and the near-field distributions have been measured. Experimental measurements agreeing qualitatively with numerical simulations validate the proposed lens and open the way to inexpensive all-dielectric microwave lenses for beam forming and collimation.
Authors:
 [1] ; ;  [1] ;  [2] ;  [3]
  1. IEF, CNRS, UMR 8622, Université Paris-Sud, 91405 Orsay Cedex (France)
  2. (France)
  3. AIRBUS Group Innovations, 92150 Suresnes (France)
Publication Date:
OSTI Identifier:
22483207
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ANTENNAS; COMPUTERIZED SIMULATION; CYLINDRICAL CONFIGURATION; DIELECTRIC MATERIALS; EMISSION; FOCUSING; LENSES; MICROWAVE RADIATION; OPTICS; REFRACTIVE INDEX; SURFACES