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Autonomous sensor of electromagnetic field.

V Jančárik1, R Hart'anský1, J Slížik1

  • 1Institute of Electrical Engineering, Faculty of Electrical Engineering and Information Technology, Slovak Technical University, Ilkovičova 3, 81219 Bratislava, Slovakia.

The Review of Scientific Instruments
|July 1, 2019
PubMed
Summary
This summary is machine-generated.

This study presents an autonomous electromagnetic field sensor that powers itself using the measured field, eliminating the need for external power or metallic cables. This design ensures accurate antenna far-field measurements without interference.

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Sensor Technology

Background:

  • Accurate measurement of electromagnetic fields is crucial for antenna performance analysis.
  • Traditional sensors often require external power and metallic cables, which can interfere with field measurements.
  • Autonomous sensing offers a solution to minimize measurement disturbances.

Purpose of the Study:

  • To describe the design of a novel uniaxial electromagnetic field sensor.
  • To enable autonomous operation powered solely by the measured electromagnetic field.
  • To facilitate accurate antenna far-field measurements in high signal strength regions.

Main Methods:

  • Design of a uniaxial sensor for electromagnetic field detection.
  • Implementation of an energy harvesting mechanism powered by the ambient field.
  • Development of data transmission via optic fiber or nonvolatile memory storage.
  • Elimination of metallic cables for power delivery and data transfer.

Main Results:

  • The sensor operates autonomously, powered by the measured electromagnetic field.
  • External power supplies and metallic cables are not required, preventing field distortion.
  • Data is transmitted wirelessly via optic fiber or stored in nonvolatile memory.
  • The sensor provides accurate measurements of the antenna far field.

Conclusions:

  • The developed autonomous sensor offers a non-invasive method for electromagnetic field measurement.
  • This technology minimizes interference, leading to more reliable antenna far-field data.
  • The sensor's self-powered nature enhances its applicability in various electromagnetic environments.