Measurement of complex permittivity of liquid dielectrics

The complex permittivity of a number of liquid dielectrics has been measured with the use of the in-waveguide technique at the X and Ku band. The TRL calibration procedure is applied for the calibration of the waveguide system. The measured results of permittivity of distilled water agree well with those published in the literature. The measured permittivity for other liquids such as ethyl alcohol, propyl alcohol, benzene, chlorobenzene, menthanol, and cyclothexane are also shown, and the properties of these liquids are discussed. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 240–243, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10427