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ELECTROMAGNETIC DOSIMETRY: DEVELOPMENT OF ANALYSIS AND MEASUREMENT TECHNIQUES FOR THREE-DIMENSIONAL COMPLEX-SHAPED DIELECTRIC BODIES

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Researchers developed a numerical model and a 12-channel temperature measurement system that showed very good agreement between computed and measured temperatures in dielectric bodies including rat-shaped models.

Plain English Summary

Summary written for general audiences

The study developed a generalized numerical model using the method of moments to compute electromagnetic field distribution and absorbed power in complex-shaped heterogeneous three-dimensional biological bodies. At 2450 MHz, excellent agreement between computed and measured results was obtained for homogeneous and heterogeneous cylinders with various field orientations, and very good agreement was found for rat-shaped models with parallel or orthogonal electric fields.

Why This Matters

The numerical model uses pulse functions as basis functions and delta functions for testing, and can handle plane wave, near-field, or enclosing coil excitations. The temperature measurement system groups twelve analog channels into four groups of three, allowing four channels to be displayed digitally at once and all twelve to be recorded by a microcomputer for temperature mapping. Convergence tests for cubes, cylinders, and ellipsoids yielded satisfactory results.

Cite This Study
Unknown (n.d.). ELECTROMAGNETIC DOSIMETRY: DEVELOPMENT OF ANALYSIS AND MEASUREMENT TECHNIQUES FOR THREE-DIMENSIONAL COMPLEX-SHAPED DIELECTRIC BODIES.
Show BibTeX
@article{electromagnetic_dosimetry_development_of_analysis_and_measurement_techniques_for_g5418,
  author = {Unknown},
  title = {ELECTROMAGNETIC DOSIMETRY: DEVELOPMENT OF ANALYSIS AND MEASUREMENT TECHNIQUES FOR THREE-DIMENSIONAL COMPLEX-SHAPED DIELECTRIC BODIES},
  year = {n.d.},
  
  
}
No DOI on file for this study.

Quick Questions About This Study

They used the method of moments with pulse basis functions and delta testing functions to solve integral equations for equivalent volume electric and magnetic currents.
A 12-channel system with thermistor probes and conductive plastic leads, capable of measuring from -60°C to +60°C with linearity within ±0.2°C over 20°C to 60°C.
The experiments used cubes, square cylinders, ellipsoids, and rat-shaped models, with both homogeneous and heterogeneous cylinders and homogeneous rat-shaped models.
At 2450 MHz, excellent agreement was found for homogeneous and heterogeneous cylinders with various field orientations, and very good agreement for rat-shaped models with parallel or orthogonal electric fields.