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Development of a prototype antenna radiation pattern measurement system using Software-Defined Radio.

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This study introduces a low-cost, automated system for measuring antenna radiation patterns using Software Defined Radio (SDR) and a Raspberry Pi. The open-source prototype offers reliable and adaptable antenna characterization for research and telecommunications.

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Theory

Background:

  • Accurate antenna radiation pattern measurement is crucial for telecommunications.
  • Existing systems can be expensive and complex.
  • Need for accessible and adaptable characterization tools.

Purpose of the Study:

  • To design and implement an automated, low-cost prototype system for measuring antenna radiation patterns.
  • To validate the system's performance and practical applicability.
  • To provide an open-source solution for antenna characterization.

Main Methods:

  • Utilized Software Defined Radio (SDR), a stepper motor, and a Raspberry Pi for automated 360° sweeps.
  • Developed a touchscreen interface for real-time control and data visualization.
  • Measured radiation patterns across a 70 MHz - 5.9 GHz frequency range in a non-anechoic environment.

Main Results:

  • The prototype successfully measured the radiation pattern of an ultra-wide band antenna with acceptable accuracy.
  • Achieved Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) below 0.172 (3.260 dB) and 0.139 (2.625 dB), respectively.
  • Demonstrated practical applicability in a non-anechoic environment.

Conclusions:

  • The developed prototype is a low-cost, reliable, modular, and adaptable solution for antenna characterization.
  • The open-source nature promotes replication and future enhancements.
  • Suitable for academic research and practical telecommunications applications.