Comments on Deficiencies in the way scattering parameters are Taught

Dipt. di Sistemi Elettrici e Automazione, Univ. di Pisa, Italy
IEEE Transactions on Education (Impact Factor: 0.84). 03/2006; 49(1):176 - 178. DOI: 10.1109/TE.2005.858402
Source: IEEE Xplore


Equivalent representation of multiport circuits by the use of scattering parameters is of fundamental importance, especially in the microwave circuits area. However, in most cases, only a few pages of textbooks are devoted to this topic; based on the author's experience, the students find it somehow difficult to understand the physical meaning of scattering parameters (while they find other representations, like Z, Y, hybrid, or transmission parameters, easy to understand). For this reason, the contribution given by Sadiku (IEEE Trans. Educ., Vol. 46, no. 3, Aug. 2003, pp. 399-404) is very important. Furthermore, in Sadiku's paper, three nontrivial examples are reported, through which the students can gain understanding of this fundamental tool. In two of the three examples, some points are unclear; this correspondence analyzes this lack of clarity.

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