Protel doesn't handle RF layout well. It can't deal with stripline
design (e.g. defining a piece of stripline in schematic of specific
length and width doesn't map well to PCB - short of defining a
library full of segments (which doesn't provide flexibility in layout))
With regard to beveled corners, I was shown a reference not long ago that
discussed the origin of beveling. It turns out that beveled corners were
developed as a workaround because arcs couldn't be defined in the CAD
systems available at the time! Radiussed corners are supposedly better
than the approximation given by a beveled corner.
I haven't personally used a field solver to confirm this, but some of
our RF designers were more than happy to allow the use of arcs in
preference to bevels (which are a right royal pain to do in Protel!).
Cheers,
JohnH
> -----Original Message-----
> From: Henrik Thurfjell [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, 14 June 2001 1:02 AM
> To: Protel EDA Forum
> Subject: [PEDA] Microwave PCB layout
>
>
> Hi all Protel fans
>
> How well can Protel handle microwave PCB layouts. You know, as
> beveled corners of strip lines.
> The default rounded trace end is a major obstacle in this case.
> Can that be changed to a square end?
> Can the mitering of corners be changed to "beveling"?
>
> Regards
> Henrik
>
> ============
> Henrik Thurfjell
> Megatron Engineering
> 1149 Susan Way, Sunnyvale CA 94087
> Direct 408 737 1718
> FAX & Messages 408 739 2429
> email: [EMAIL PROTECTED] or [EMAIL PROTECTED]
>
>
>
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