Stats

  • Locked Locked
  • Replies 10
  • Subscribers 166
  • Views 19043
  • Members are here 0
More Content
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Tapered Trace function not working

FrancisFogarty

Hi Guys,

im using cadence allegro 16.5 version. and for some reason the tapered trace function wont work on a selected cline?

i have attached an image with this of the issue and you can see why i wish to taper. the function says it has finished but the cline stays the same.

i know that there is a desired angle and tapered trace options in the settings for tapered traces but im not sure how this works? would anyone know the optimal settings to get this to work?

all help is welcome.Thanks

Regards

Fran  

Parents
  • ScottCad

    Hi Fran, I took a look at your symbol. I think the best way to route a trace to that Tapered center pad is to extend the pad edge out further. so when you route the trace to it you can preserve the taper. I tried a few things and that was the best I could come up with.

    The issue is you more than likely have to use a trace that is a certain width but when you route the trace it is snapping to the center of the pin and because your trace is wider than the tapered pad at that point you get overlap.

    To work around this Extend out the shape before it tapers. You can do this by just drawing another shape to the left of the wide edge of the pad keeping the width the same and then just merge both shapes into 1 shape. This will save you having to move your existing pad.

    when you route your trace to the pad start with a small width to clear the taper then change the width to your required width and it should flow nicely. It will look like a nice tapered transmission line when done. 

    Thanks Scott

Reply
  • ScottCad

    Hi Fran, I took a look at your symbol. I think the best way to route a trace to that Tapered center pad is to extend the pad edge out further. so when you route the trace to it you can preserve the taper. I tried a few things and that was the best I could come up with.

    The issue is you more than likely have to use a trace that is a certain width but when you route the trace it is snapping to the center of the pin and because your trace is wider than the tapered pad at that point you get overlap.

    To work around this Extend out the shape before it tapers. You can do this by just drawing another shape to the left of the wide edge of the pad keeping the width the same and then just merge both shapes into 1 shape. This will save you having to move your existing pad.

    when you route your trace to the pad start with a small width to clear the taper then change the width to your required width and it should flow nicely. It will look like a nice tapered transmission line when done. 

    Thanks Scott

Children
No Data
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.