Stats

  • Replies 2
  • Subscribers 17
  • Views 10256
  • Members are here 0
More Content

Drawing sectors using SKILL

RakeshPRG

Hi,

I am trying to draw sector in my Layout. For this, I used a skill code that generates fragmented circle (If the points exceed the specified limit, the circle is cut into multiple sectors) [sectorgenerated.png]. The radius-edge of the sector is chopped in a way that it does not follow the grid and hence it fails DRC (because these points do not like of 5 nm grid specified by layout) [DRC Violation]. I found that drawing a stepped polygon near to these out-of-grid edges and merging with my structure made it DRC clean [Sector.png].

But this polygon based drawing over the out of grid edges is tedious and time-consuming since the grid is two small for manually connecting points using a stepped-polygon.

i was hoping if there is a way to connect two points using a stepped polygon where the vertices coincide with the grid points. or a SKILL code that can generate a sector itself. .

Parents
  • eDave

    It looks like an interesting problem but it would help to understand why you re doing this. Why not just draw an arc using an axlPathArc command?

  • RakeshPRG
    in reply to eDave

    Hi,

    I dont know how to use that command "axlpatharc" as I am relatively new to SKILL language. I am working on some optical device models which can be laid out in cadence. (Some of the examples include a sector of definite angle and radius which can be used as lens) But these shapes include circles, and arcs. The usual donut and circles provided by the layout do not pass the DRC as they donot fit in the manhattan-type grid. This is also true for the structures created using donut /circle  commands in SKILL.

Reply
  • RakeshPRG
    in reply to eDave

    Hi,

    I dont know how to use that command "axlpatharc" as I am relatively new to SKILL language. I am working on some optical device models which can be laid out in cadence. (Some of the examples include a sector of definite angle and radius which can be used as lens) But these shapes include circles, and arcs. The usual donut and circles provided by the layout do not pass the DRC as they donot fit in the manhattan-type grid. This is also true for the structures created using donut /circle  commands in SKILL.

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.