Stats

  • State Suggested Answer
  • Replies 2
  • Answers 1
  • Subscribers 160
  • Views 10878
  • Members are here 0
More Content

What is the difference between plane and conductor layers?

JJJin

Hi, 

I am working on a 4 layers pcb with allegro, and Top Bottom are for signals, middle two layers are ground. I tried to use impedance value given by allegro, but there is a big difference if I set middle layers as conductor or plane in stack. 

I don't understand why the change of denfinition can result such a difference, I mean anyway, it still is a layer of metal. From manufacturing side, I couldn't see a difference if I define it as conductor or plane.

I assum the calculation of impedance is carried out differently, but exactly how, could someone give some ideas?

Thanks !

BR  Jin

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.