A review of RF and microwave techniques for dielectric measurements on polar liquids

  • Gregory A
  • Clarke R
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Abstract

The requirements for dielectric measurements on polar liquids lie largely in two areas. First there is scientific interest in revealing the structure of and interactions between the molecules - this can be studied through dielectric spectroscopy. Secondly, polar liquids are widely used as dielectric reference and tissue equivalent materials for biomedical studies and for mobile telecommunications, health and safety related measurements. This review discusses these roles for polar liquids and surveys the techniques available for the measurement of their complex permittivity at RF and Microwave frequencies. One aim of the review is to guide researchers and metrologists in the choice of measurement methods and in their optimization. Particular emphasis is placed on the importance of traceability in these measurements to international standards

Author-supplied keywords

  • Biomedical measurements
  • Dielectric liquids
  • Dielectric materials
  • Dielectric measurements
  • Microwave measurements
  • Millimetre-wave measurements
  • Moisture measurement
  • Permittivity measurement
  • Transmission-line measurements
  • UHF measurements

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Authors

  • Andrew P. Gregory

  • Robert N. Clarke

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