Sensitivity analysis of multiport S‐parameter measurements due to nonideal TRL calibration standards. Issue 9 (5th September 2017)

• Record Type: Journal Article
• Authors: Wang, M.; Zhao, Y. J.; Jin, Y. M.; Zhou, Y. G.
• Is Part Of: Radio science. Volume 52:Issue 9(2017:Sep.)
• Page Start: 1096
• Page End: 1105
• Publication Date: 2017-09-05
• Subjects: TRL calibration -- multiport VNA -- sensitivity coefficient -- measurement uncertainty -- general node equation; Radio meteorology -- Periodicals; Radio wave propagation -- Periodicals; 621.38405
• DOI: 10.1002/2017RS006380
• Languages: English
• ISSNs: 0048-6604

Abstract

Abstract: In this paper, a detailed analysis of n‐port vector network analyzer measurement uncertainties due to nonideal standards for multiport through‐reflect‐line calibration is presented. By using the concept of general node equations, the error correction equation is simplified by the matrix operation; thus, a generalized formula for the deviations of the measured S parameters with respect to the error terms is derived, which can be implemented in further analysis of multiport measurement uncertainties applying arbitrary calibration method based on 4n‐term error model. The final expressions for the sensitivity coefficients of S parameters with simple and clear form provide a deeper understanding of error propagation mechanisms. Key Points: Generalized formula for error correction and the deviations of calibrated S parameters is derived The analytical expressions for the sensitivity coefficients of S parameters are given with respect to individual T/R/L calibrator