[SI-LIST] Re: Trace Bends


Here it is:

http://www.ultracad.com/articles.htm


Wojciech Babij
Senior International Approvals Engineer
NMS Communications
100 Crossing Blvd
Framingham, MA 01702



                                                                                
                                                       
                      Ritchey Lee                                               
                                                       
                      <leeritchey@earth        To:       
ched_chang@xxxxxxxxxxx, Doug Brooks <doug@xxxxxxxxxx>                         
                      link.net>                cc:       si-list@xxxxxxxxxxxxx  
                                                       
                      Sent by:                 Subject:  [SI-LIST] Re: Trace 
Bends                                                     
                      si-list-bounce@fr                                         
                                                       
                      eelists.org                                               
                                                       
                                                                                
                                                       
                                                                                
                                                       
                      04/29/02 11:01 AM                                         
                                                       
                      Please respond to                                         
                                                       
                      leeritchey                                                
                                                       
                                                                                
                                                       
                                                                                
                                                       




Ched-Chang,

The answer to your first three questions is no.  There are a number of
articles that test this.  One of the best was done by Doug Brooks of
Ultracad.  I've copied him on this in the hope he has an electronic copy
that
he can send you.

Lee

Ched-Chang Chai wrote:

> Dear all,
> I have read some articles about trace bend on printed circuit board and I
> have basic idea about the effect of trace bends. I would like to know
more
> about this topic. Hope someone can help.
> (1) Will the trace bend gives significant electromagnetic radiation?
> (2) How significant is the impedance discontinuity at the bends in actual
> PCB design?
> (3) How the sharp bends (90 degree or 45 degree) affect the skin effect?
> (4) Is there any good article, paper or book about this subject?
> Thank you very much in advance.
> --
> Rgds,
> Chai
>
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