Inductors and Wires — Lesson 3

This lesson covers the intricate details of inductors and wires. The lesson also explains the concept of eddy current in the substrate and its impact on the inductor's performance. It further discusses the different models for inductors, their non-idealities, and how to design better inductors. The lesson also introduces the concept of skin depth and its implications on wire and inductor design. For instance, it explains how a wire behaves like an inductor at high frequencies and how to calculate the effective inductance per unit length.

Video Highlights

00:24 - Introduction and recap of previous lesson
10:33 - Square spiral inductor
21:29 - Discussion on resistive substrate and lamination
38:04 - Intro to wire
52:20 - Calculation of the effective inductance per unit length of a wire

Key Takeaways

- Inductors have non-idealities like copper loss and core loss, which can be minimized through design optimization.
- Eddy current in the substrate can impact the performance of an inductor.
- The skin depth of a wire, which refers to the depth at which current effectively flows, has significant implications on wire and inductor design.
- Skin depth has significant implications on wire and inductor design, especially at high frequencies.
- The effective inductance and capacitance per unit length of a wire are crucial parameters in circuit design.