Re: gEDA-user: trace calculation

[Karel Kulhavy <clock@xxxxxxxxxxxxx>]

On Thu, Jan 05, 2006 at 01:39:11PM -0500, DJ Delorie wrote:
> 
> > Why? Via doesn't have much more inductance than a piece of trace,
> > does it?
> 
> At high enough frequencies, traces are waveguides, not just
> conductors.  Vias have nontrivial geometry relative to the signal.
> 
> That reminds me of another optimization I'd like to implement in the
> future.  Instead of corners, treat all traces like elastic bands, so
> that they end up as sweeping curves (lines+arcs) with no corners at
> all (except for 3-trace nodes).  I want this myself just because it
> makes the board look pretty, but I wonder if gentle curves provide
> better waveguide performance than corners?

Not only. The traces then don't waste so much space.

CL<