Complex S-parameter measurement and its uncertainty evaluation on a vector network analyzer

被引：10

作者：

Patel, Kamlesh ^{[1
]}

Negi, P. S. ^{[1
]}

Kothari, P. C. ^{[1
]}

机构：

[1] Natl Phys Lab, New Delhi 110012, India

来源：

MEASUREMENT | 2009年 / 42卷 / 01期

关键词：

Complex S-parameter; Standard uncertainty; Correlation coefficient; Vector network analyzer; EA guidelines;

D O I：

10.1016/j.measurement.2008.04.010

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present paper deals with an uncertainty evaluation in complex scattering (S)-parameter measurements and the correlation coefficients between the real and imaginary components of S-parameters in the frequency range 2-18 GHz. The measurements were performed for one-port and two-port components using a vector network analyzer (VNA) and the uncertainty estimation for complex transmission and reflection coefficients were done separately. The various contributors to the measurement uncertainty in real and imaginary component of S-parameter have been evaluated as per the European cooperation for Accreditation (EA) Guidelines on VNAs. Uncertainty budgets have been provided for one/two-port components separately with various sources of uncertainties involved and their distribution. This paper reports the combined standard uncertainty within +/- 0.005 and +/- 0.015 in complex transmission and reflection coefficients. respectively, upto 18 GHz. The correlation coefficients (+1.0 to -1.0) between the real and imaginary components of S-parameters are calculated for a coaxial mismatch of voltage standing wave ratio (VSWR) approximate to 3.0 and a coaxial attenuator (3 dB) in Type-N connectors. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：145 / 149

页数：5

共 9 条

[1]

*EU COOP ACC, 2000, EA1012 EU COOP ACC

[2] Calculating measurement uncertainty for complex-valued quantities [J].