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Microwave Imaging Sensor Using Low Profile Modified Stacked Type Planar Inverted F Antenna.

Mohammad Tariqul Islam1,2, Md Amanath Ullah3, Touhidul Alam4

  • 1Centre of Advanced Electronic and Communication Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, Bangi, Selangor 43600, Malaysia. tariqul@ukm.edu.my.

Sensors (Basel, Switzerland)
|September 8, 2018
PubMed
Summary

This study introduces a cost-effective modified Planar Inverted F Antenna (PIFA) for microwave imaging. The developed antenna sensor effectively detects abnormalities in human tissue phantoms, showing potential for medical diagnosis.

Keywords:
PIFASARantennadesignmicrowave imagingsensorunidirectional

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Area of Science:

  • Electromagnetics
  • Biomedical Engineering
  • Microwave Engineering

Background:

  • Microwave imaging utilizes electromagnetic waves for non-invasive detection of internal structures.
  • Changes in dielectric properties of biological tissues can indicate abnormalities.
  • Conventional microwave antennas can be expensive and complex.

Purpose of the Study:

  • To develop and analyze a cost-effective modified Planar Inverted F Antenna (PIFA) for microwave imaging applications.
  • To evaluate the antenna's performance in detecting concealed objects and biological abnormalities.
  • To validate the sensor's capability through computational and experimental analyses.

Main Methods:

  • Design and simulation of a stacked type modified PIFA with specific dimensions (40x20x10 mm³ radiating patch).
  • Utilized inexpensive copper sheets for reflector walls (45 mm length, 0.2 mm thickness).
  • Performance analysis included computational and experimental studies using human tissue phantoms and a breast phantom.

Main Results:

  • The modified PIFA operates efficiently within the 1.55–1.68 GHz frequency range.
  • Achieved a maximum realized gain of 4.5 dB with stable unidirectional radiation patterns.
  • Successfully identified a tumor in a computational phantom and demonstrated potential in a realistic breast phantom.

Conclusions:

  • The proposed modified PIFA serves as a viable and economical microwave imaging sensor.
  • The antenna sensor shows promise for localizing abnormalities in biological tissues.
  • This technology offers a cost-effective alternative for medical diagnostic imaging.