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RF field penetration from electrically small hyperthermia applicators.

A W Preece1, J L Murfin, R H Johnson

  • 1Radiotherapy Centre, Bristol Royal Infirmary, UK.

Physics in Medicine and Biology
|December 1, 1987
PubMed
Summary
This summary is machine-generated.

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Radio frequency (RF) energy penetration into lossy materials from small apertures is nearly constant across frequencies, as confirmed by experimental measurements.

Area of Science:

  • Electromagnetics
  • Materials Science

Background:

  • Understanding radio frequency (RF) energy interaction with materials is crucial for various applications.
  • Electrically small radiating apertures present unique electromagnetic behavior.

Purpose of the Study:

  • To theoretically investigate and experimentally validate the frequency independence of RF energy penetration into lossy materials from small apertures.

Main Methods:

  • Theoretical analysis of RF energy propagation through lossy media.
  • Experimental measurements using small radiating apertures.

Main Results:

  • Theoretical models predict that RF energy penetration is largely independent of frequency.
  • Measurement data confirms the theoretical prediction of frequency-independent RF penetration.

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Conclusions:

  • The frequency of RF energy does not significantly affect its penetration depth into lossy materials from small apertures.
  • This finding has implications for the design and performance of devices utilizing RF energy in lossy environments.