Properties of Scattering Parameters - Part II — Lesson 3

This lesson covers the properties of S-parameters in microwave integrated circuits, with a focus on their application to two-port networks. It delves into the conditions for reciprocity and losslessness, and how these conditions affect the parameters of the networks. The lesson also explains how to calculate S-parameters from first principles using a simple series reactor as an example. It further discusses the importance of input and output reflection coefficients in two-port networks and how to calculate them. The lesson concludes with a brief introduction to signal flow graphs, which simplify the analysis of signal flow, especially when dealing with incident and reflected waves.

Video Highlights

00:16 - Introduction
01:03 - S parameter matrix when 2 port network is lossless
06:44 - S parameters in terms of phases
12:16 - Direct calculation of S parameters using example.
28:01 - Output reflection coefficient for a two-port Network
29:58 - S parameters of an attenuator

Key Takeaways

- S-parameters are crucial in understanding the properties of microwave integrated circuits, particularly in two-port networks.
- Reciprocity and losslessness are two key conditions that influence the parameters of these networks.
- Input and output reflection coefficients are important parameters in two-port networks and can be calculated using specific formulas.
- Signal flow graphs can simplify the analysis of signal flow, especially when dealing with incident and reflected waves.