One of the fundamental aspects of any circuit diagram is the return current path. In a circuit diagram and a schematic diagram, the path that electric current follows to return to the low potential side of a power source should be obvious, but it may not be so obvious in a PCB.
0:00 Intro
1:16 How Signals Travel on Traces
2:30 What Is a Displacement Current?
3:45 Examining Signal Return Paths
4:51 Analogue Vs. Digital Signal Return Paths
7:49 The Goal in Mixed Signal Design
8:44 Return Current Paths for Different Frequencies
9:36 Outro
For more Mixed Signal PCB Design videos, click here:
For more Signal Integrity videos, click here:
For more PCB Design for Advanced Users videos, click here:
Transmission Line Articles on Altium’s Website:
- Transmission Line Impedance: The Six Important Values:
- Why Impedance Matching is Important in a Transmission Line:
Resistive vs. Inductive Return Current Paths by Bruce Archambeault, Ph.D., IEEE Fellow:
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