Performance comparisons between impedance analyzers and vector network analyzers for impedance measurement below 100 MHz frequency

We have investigated equivalency of the measurement performance between LCR meter, impedance analyzers and vector network analyzers. Each instrument measures impedance/reflection characteristics based on different theory of measurement operation. We adopted the error correction (calibration) model of reflect meter (vector network analysis) in all measurement by LCR meter, impedance analyzer and vector network analyzer. In the study, all measurement instrument has PC7 connector as test port (adapter convert to PC7 connector from 4 terminal pair for LCR meter and impedance analyzer) and it has been calibrated by open, short and load standard devices with PC7 connector. Then, offset short and two different impedance (VSWR 1.05 and 2.00) were measured and measurement results by each instrument were compared. All measurement result agreed to each other within the uncertainty (equivalency) in frequency range from 30 kHz to 100 MHz.