2026-05-28T23:32:03Zhttps://riuma.uma.es/rest/oai/request

oai:riuma.uma.es:10630/244522026-02-03T11:56:28Zcom_10630_2254col_10630_37959

00925njm 22002777a 4500 dc Pérez-Escribano, Mario author Márquez-Segura, Enrique author 2022 In this contribution, we study different error sources that affect the estimation of the propagation constant in broadband methods. For this purpose, a study on the state-of-the-art has been made. The behavior of different error sources was examined separately: errors in the vector network analyzer, in the line lengths, in the inhomogeneity of the substrate, and the repeatability of the launchers. It has been shown that, depending on the method used, the behavior of the random errors can be different. In this sense, an excellent strategy to reduce the errors is to increase the number of lines, choosing their length reasonably. On the other hand, it has been seen that both the errors in the length of the lines and in the inhomogeneities of the substrates will work as a bias in the solution of the estimated propagation constant. The bias will depend on the difference between lengths or substrates. Finally, it has been studied how the repeatability of transitions and connectors affects the methods. To improve this problem, it has been demonstrated that always using the same pair of connectors is an efficient way to reduce the uncertainty of the results. https://hdl.handle.net/10630/24452 Líneas de transmisión Ondas electromagnéticas - Propagación Redes de banda ancha Fuentes de error aleatorio en la estimación de la constante de propagación de líneas de transmisión usando medidas de dos puertos