Scattering Parameters — Lesson 1

This lesson covers the concept of impedance parameters, admittance parameters, and their dependence on voltage and current. It further discusses the challenges in measuring voltage and current in single conductor waveguides and two conductor wave guides. The lesson also introduces the concept of scattering parameters, which clarify the relationship between various ports on a microwave device. The lesson concludes with a detailed discussion on the properties of lossless and reciprocal networks and it also covers the S parameters of 2 port network.

Video Highlights

00:15 - Introduction
01:50 - Impedance parameter and admittance matrix
05:10 - Discussion on the concept of reciprocity in circuits
07:19 - Lossless network and conditions for a network to be reciprocal
21:04 - Concept of scattering parameters or S parameters
27:36 - S parameters for a 2 port network

Key Takeaways

- Impedance parameters and admittance parameters are dependent on voltage and current.
- Measuring voltage and current in single conductor waveguides and two conductor wave guides can be challenging.
- Scattering parameters clarify the relationship between various ports on a microwave device.
- Lossless and reciprocal networks have specific properties that can be identified through their impedance and admittance matrices.