When doing PCB layout and designing boards, many people ask if GND is important for differential pair signals. Here is the answer. Thank you Eric.

DesignCon: https://www.designcon.com/
Use 15% DesignCon 2024 Discount coupon: FED24

Other Links:
- Eric's Linked In:   / eric-bogatin-368860  
- Study High-Speed Digital Engineering at University: https://www.colorado.edu/ecee/academi...
- What Decoupling Capacitor Value To Use And Where To Place Them    • What Decoupling Capacitor Value To Us...  
- FEDEVEL courses: https://fedevel.com/courses

Chapters:
00:00 What is this video about
01:16 P & N
02:09 Real differential pair vs. two single ended lines
07:11 Differential pair going through a transformer vs. ground
08:35 Are diff pairs routed on board different from diff pairs in cables?
11:42 Differential vs. common
15:12 What if a differential pair doesn't have any return plane - examples explained
17:28 Simulation of a single ended signal vs. return current path
21:05 Simulation differential pair signals vs. return current path
24:04 Tightly vs. loosely coupled differential pairs
28:51 Differential pairs vs. return plane far away
34:03 Example 1: Single ended signal in cable
34:56 Example 2: Single ended vs. differential signal in cable
36:22 Results: Impedance graphs
39:51 Example 3: Single ended vs. differential signal in PCB without GND plane

------------------------------------------------------
Would you like to support me? It's simple:

- Sign up for online courses hosted on our platform: https://fedevel.com/
- You can also support me through Patreon:   / robertferanec  
- FEDEVEL Discord:   / discord  

It is much appreciated. Thank you,
- Robert