Stats

State Not Answered
Replies 0
Subscribers 66
Views 8
Members are here 0

Why do symmetrical etch layers show different impedance values in Display > Parasitic?

Hi everyone,

I routed clines on L4 and L5 with the same width, and both layers are symmetrical to the shield ground.

However, in Display > Parasitic, I’m seeing different impedance values. I expected them to be similar.

Has anyone seen this before?
Which stackup or cross-section setting should I check first? Could this be related to conductor properties in the field solver?

Thanks in advance!

Cadence Guidelines

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.