Regards.
Georg Ramsch wrote:
> Hello, Paul !
>
> Is your transmission line a microstrip or strip line construction ?
>
> If your CAD system supports it, just design the transmission line as
> "optimal rounded bend", such you avoid problems with impedance steps or
> radiating (radius as large as possible).
>
> A good listing of non-90-edge routing is delivered by Wadell/Transmssionline
> Design Handbook,
> chapter 5.5.
>
> CU
>
> Georg
>
> "Denomme, Paul S." wrote:
> >
> > Hello All,
> >
> > I am trying to find out at what frequency does a 45 degree angle in
> > circuit traces have a large affect. Has there ever been a study on the
> > impact of 45 degree angles on circuit board traces? If so, where can I get
> > some further information.
> >
> > Howard Johnsons book states "Don't worry about 45 degree angles they
> > are fine as is." Has anyone ever had a problem that contradicts this
> > statement?
> >
> > I am designing a board right now that has clock frequencies up to
> > 622 MHz. I believe I will not have any problems using 45 degree angles at
> > 622 MHz, but would appreciate anyone's input on this issue.
> >
> > Thanks in advance for your help.
> >
> > Paul S. Denomme
> > Backplane Design Engineer
> > Viasystems Technologies Inc.
> > Richmond, VA 23113
> > 804-226-5355
> > E-MAIL: [email protected]
> >
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