Radiation-enhancing reflector

C. A. Valagiannopoulos, S. A. Tretyakov

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

    Abstract

    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
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9788890701863
    DOIs
    Publication statusPublished - May 31 2016
    Event10th European Conference on Antennas and Propagation, EuCAP 2016 - Davos, Switzerland
    Duration: Apr 10 2016Apr 15 2016

    Other

    Other10th European Conference on Antennas and Propagation, EuCAP 2016
    CountrySwitzerland
    CityDavos
    Period4/10/164/15/16

    Keywords

    • conjugate-matched layer
    • reflector
    • superdirectivity

    ASJC Scopus subject areas

    • Radiation
    • Computer Networks and Communications
    • Instrumentation

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  • Cite this

    Valagiannopoulos, C. A., & Tretyakov, S. A. (2016). Radiation-enhancing reflector. In 2016 10th European Conference on Antennas and Propagation, EuCAP 2016 [7481933] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EuCAP.2016.7481933