Aiming at problem that measuring instruments is expensive and requirement of measurement sample is high in traditional solution dielectric constant measurement method

a new dielectric constant measurement method of solution based on network analyzer is proposed. This method uses network analyzer to measure phase change of signal before and after transmission in solution whose dielectric constant is known

relationship model of phase difference and dielectric constant is set up by method of least squares

and predict dielectric constant of unknown solution using the model. Experiment indicates that the method is simple to manipulate

the device is network analyzer which is low-cost and measurement demand for test sample is low

and the sample under test can be any solutions

applied for fast measurement dielectric constant of unknown solution.