A precision waveguide system for the measurement of complex permittivity of lossy liquids and solid tissues in the frequency range 29 GHz to 90 GHz I. The liquid system for 29 to 45 GHz; an investigation into water

Abstract

A waveguide system is described which enables the complex permittivity of high loss, high permittivity liquids to be measured accurately at spot frequencies lying within the range 29-45 GHz. Some test data are presented and the experimental errors are considered.