Measurement with Sweeping Frequency for Complex Permittivity Based on VNA
Gao Wei · Yuhang jice jishu · 2011
The waveguide method of measuring the complex permittivity parameter is used,and then an automatic measure system(8GHz~18GHz) based on VC++ is built.The measurement using VNA(Vector Network Analyzer) with sweeping frequency not only could get the frequency characteristic of complex permittivity but also make the choice of correct result in the different results of transcendental equation convenient,and the accuracy of measure results is improved too.Through actual measurement,the automatic measure system is easy to operate and works at high speed.The tested results reach high accuracy and satisfy the requirements of project.