Evaluation of dielectric parameters for dilute solutions at microwave frequencies using a numerical curve fitting technique

Abstract

A new method involving an elegant computer curve fitting technique is discussed for evaluating ε′ and ε″, for dilute solutions at X- and Q-bands, with a greater accuracy. Four compounds with rigid (chlorobenzene) and nonrigid (anisole, phenol, and guaiacol) molecules have been tested with this method. The important advantage of the present method is that it involves no mathematical assumptions. The error involved in evaluating ε′ and ε″ is estimated to be 1% and 1–2% respectively.