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Slotted Monopole Patch Antenna for Microwave-Based Head Imaging Applications.

Abdulrahman Alqahtani1,2, Mohammad Tariqul Islam3, Md Siam Talukder4

  • 1Department of Medical Equipment Technology, College of Applied, Medical Science, Majmaah University, Majmaah City 11952, Saudi Arabia.

Sensors (Basel, Switzerland)
|October 14, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel microwave antenna for stroke detection. The developed antenna shows promising results for safe and effective brain tissue imaging in microwave imaging applications.

Keywords:
microwave imagingmicrowave-basedmonopole patch antennastroke recognition

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Area of Science:

  • Biomedical Engineering
  • Electromagnetics
  • Medical Imaging

Background:

  • Microwave imaging (MWI) offers a promising non-ionizing radiation technique for medical diagnostics.
  • Accurate detection of hemorrhagic or ischemic stroke is critical for timely patient intervention.
  • Existing MWI systems require efficient and safe antenna designs for effective brain tissue penetration.

Purpose of the Study:

  • To design and evaluate a modified monopole patch antenna for microwave-based stroke recognition.
  • To assess the antenna's performance in terms of bandwidth, gain, efficiency, and safety for brain imaging.

Main Methods:

  • A modified monopole patch antenna was designed and fabricated using FR-4 material.
  • Inset feeding was employed to reduce input impedance.
  • The antenna's performance was evaluated through simulations and experimental measurements, including time-domain analysis and specific absorption rate (SAR) testing.

Main Results:

  • The antenna achieved a bandwidth of 2.4 GHz (1.3-3.7 GHz) with a peak gain exceeding 6 dBi and efficiency over 90%.
  • Minimal signal distortion was observed in time-domain analysis.
  • The antenna demonstrated satisfactory brain tissue penetration with a maximum SAR value below 0.1409 W/kg, ensuring safety.

Conclusions:

  • The designed modified monopole patch antenna is suitable for microwave imaging applications.
  • The antenna's performance characteristics and safety profile make it a viable candidate for stroke detection systems.
  • The study validates the potential of this antenna for future advancements in microwave-based neurological diagnostics.