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Related Experiment Videos

Programmable sweep radiometer system as a new tool for non-invasive thermometry.

M Miyakawa1

  • 1Department of Information Engineering, Faculty of Engineering, Niigata University, Japan.

The Journal of Microwave Power and Electromagnetic Energy : a Publication of the International Microwave Power Institute
|January 1, 1991
PubMed
Summary

A novel microwave radiometer system offers precise, non-invasive human body temperature measurement. This advanced system utilizes a frequency sweep and ultra-wideband antenna for enhanced thermometry applications.

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Area of Science:

  • Biomedical Engineering
  • Microwave Engineering
  • Medical Physics

Background:

  • Accurate non-invasive thermometry is crucial for medical diagnostics and monitoring.
  • Existing methods for measuring human body temperature have limitations in precision and invasiveness.
  • Advancements in microwave technology offer potential for novel thermometry solutions.

Purpose of the Study:

  • To develop and characterize a new microwave radiometer system for non-invasive human body thermometry.
  • To evaluate the system's performance in terms of sensitivity and frequency range.
  • To explore the potential applications of this technology in medical settings.

Main Methods:

  • Development of a computer-controlled, frequency sweep-type microwave radiometer.

Related Experiment Videos

  • Integration with an ultra-wideband antenna for broad frequency coverage (0.5 GHz to 8 GHz).
  • Testing the system's sensitivity with an antenna attached to a forearm.

    • Main Results:

    • The developed radiometer system operates across a wide frequency range (0.5-8 GHz).
    • The system demonstrated high sensitivity, exceeding 0.09°C with a 3-sec integration time and 500 MHz IF bandwidth.
    • The system can function as both a multispectral and a continuous frequency sweep radiometer.

    Conclusions:

    • The newly developed microwave radiometer system is capable of sensitive, non-invasive thermometry.
    • Its flexible frequency selection and high sensitivity make it suitable for various medical applications.
    • This technology holds promise for advancing non-invasive human body temperature monitoring.