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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters
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3D Antenna Characterization for WPT Applications.

Marina Jordão1, Diogo Pires1, Daniel Belo1

  • 1Instituto de Telecomunicações, Departamento de Eletrónica, Telecomunicações e Informática, Universidade de Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.

Sensors (Basel, Switzerland)
|July 2, 2021
PubMed
Summary

This study introduces a novel 3D antenna array for enhanced wireless power transmission (WPT). The 3D antenna efficiently directs energy across all azimuth directions, improving WPT system performance.

Keywords:
3D antenna arrayInternet of Things (IoT)multi-sinesover-the-air (OTA)wireless power transmission (WPT)wireless sensor network (WSN)

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Wireless Communication

Background:

  • Wireless Power Transmission (WPT) systems require efficient energy delivery.
  • Traditional antenna arrays often have limitations in omnidirectional or multi-directional energy transmission.
  • 3D antenna designs offer potential advantages for advanced WPT applications.

Purpose of the Study:

  • To present a novel three-dimensional (3D) antenna array designed to enhance Wireless Power Transmission (WPT) systems.
  • To characterize the performance of this 3D antenna array using over-the-air (OTA) multi-sine techniques.
  • To demonstrate the practical application of the 3D antenna in powering an RF-DC converter.

Main Methods:

  • Design and construction of a 3D antenna array with 15 elements on a unique structure.
  • Utilizing over-the-air (OTA) multi-sine characterization to identify optimal element operation for directional energy transmission.
  • Evaluating the 3D antenna's performance in a real-world WPT scenario powering an RF-DC converter.

Main Results:

  • The 3D antenna successfully transmits energy in all azimuth directions at various elevation angles without mechanical movement.
  • OTA multi-sine techniques were adapted to precisely control directional energy transmission from specific antenna elements.
  • Experimental validation in a WPT scenario confirmed the effective powering of an RF-DC converter.

Conclusions:

  • The developed 3D antenna array significantly improves WPT system performance by enabling omnidirectional energy transmission.
  • The characterization method effectively guides the operation of individual antenna elements for targeted power delivery.
  • The 3D antenna is a viable and advantageous solution for practical WPT applications, as demonstrated by powering an RF-DC converter.