Hello everyone, I was wondering if someone can help to find below answers: 1. I have a design which will be having power rings at the periphery and power strips connected to the power rings for VDD and VSS. So what can be the minimum spacing between two VDD or two VSS strips? 2. At what length of metal line/ local interconnect antenna effect comes into picture in layout for sky130 ? I am not aware of how antenna effect occurs with respect to layout design.

load your def file in

openroad -gui

and check the spacing

The min spacing depends on the width. You can look it up in the tech lef's SPACINGTABLE for the appropriate layer.