Uncertainty estimation of measurement using a vector network analyzer

In this study, we propose a specification which is able to estimate the uncertainty more easily and quickly and also able to maintain a confidence level when measuring the magnitude and phase of 1-port and 2-port transmission /spl middot/ reflection coefficient using a VNA and attached coaxial cable probes. This proposed specification is available when it needs extra special condition of uncertainty estimation and when there is no additional standard equipment such as a beadless airline or mismatch standard at the measurement institute. We compare and examine this proposed uncertainty estimation method with recommends the EA specification and Agilent specification. As a result, we think that this proposed specification can be used as a reference for uncertainty estimation and calculation of a VNA system, that is, a reference based on the ISO/IEC 17025 requirements.