Radiation-enhancing reflector

C. A. Valagiannopoulos, S. A. Tretyakov

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


We show that it is possible to realize a passive planar reflector whose reflectivity (close to the resonant frequency of the reflector structure) is larger than unity. This reflector is strongly coupled to evanescent fields of external sources and most effectively extracts power from them. Next, this power can be launched into far zone if the surface of the reflector is perturbed by some small passive scatterers. Used as electrically large reflector antennas, such planar surfaces show superdirectivity properties (the effective area is larger than the geometrical area of the reflector) while there is no need for careful subwavelength control over the amplitude and phase of the surface currents.

Original languageEnglish
Title of host publication2016 10th European Conference on Antennas and Propagation, EuCAP 2016
Number of pages3
ISBN (Electronic)9788890701863
Publication statusPublished - 31 May 2016
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Antennas and Propagation - Davos, Switzerland
Duration: 10 Apr 201615 Apr 2016
Conference number: 10

Publication series

NameProceedings of the European Conference on Antennas and Propagation
ISSN (Electronic)2164-3342


ConferenceEuropean Conference on Antennas and Propagation
Abbreviated titleEuCAP


  • conjugate-matched layer
  • reflector
  • superdirectivity

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