Retrodirective antenna array for circularly polarized wireless power transmission

Pascual Hilario Re, Symon K. Podilchak, Samuel Rotenberg, George Goussetis, Jaesup Lee

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

16 Citations (Scopus)


In this paper, a retrodirective antenna (RDA) array for wireless power transmission (WPT) is presented. Applications include the charging of mobile device batteries wirelessly. Thanks to the principle of phase conjugation in mixers, retrodirectivity can be achieved in the far-field. More specifically, the reported RDA architecture deals with an active transmitter module to retrodirect a received beacon tone, with increased power, from a mobile unit and with circularly polarized (CP) radiation. Measurements and simulations show a good agreement in terms of the retrodirective tracking capabilities. In addition, a new RDA architecture is also proposed for WPT, using sub-arrays, in order to boost the overall received power at the mobile while also not significantly increasing the costs of the active transmitter module. Other applications for the proposed RDA circuit element include target tracking, low-cost sensor charging, and other WPT systems.

Original languageEnglish
Title of host publication2017 11th European Conference on Antennas and Propagation (EUCAP)
Number of pages5
ISBN (Electronic)9788890701870
Publication statusPublished - 18 May 2017
Event11th European Conference on Antennas and Propagation 2017 - Paris, France
Duration: 19 Mar 201724 Mar 2017


Conference11th European Conference on Antennas and Propagation 2017
Abbreviated titleEUCAP 2017

ASJC Scopus subject areas

  • Safety Research
  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation


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