Kitty, in my experience it depends on the engineer and on the signal. Some
of my engineers want the corners rounded and some of them want a mitered
corner that looks something like this: (a 90 degree angle on the inside of
the miter and a 45 degree angle on the outside).

________
        \
         \
____      \
    |      |
    |      |
    |        |
    |        |
             |


I think it also depends on how sensitive the signal is.

-------------------------------------------
Jacqueline O'Grady
Product Development

Spotwave Wireless
1 Hines Rd.
Ottawa, Ontario
K2K 3C7

613 591-1662 ext. 252
[log in to unmask]


-----Original Message-----
From: Kitty Hines [mailto:[log in to unmask]]
Sent: Thursday, December 02, 2004 2:39 PM
To: [log in to unmask]
Subject: [DC] Another RF Question??

Which trace geometry is best suited for High-Speed RF signals...
Rounded traces, or Square corners?
I've heard the theory that if you use corners...
the current travels straight, then turns to it's location, but any
EMI/cross-talk noise will continue to try to travel straight and "fall
of the edge"?  What's your theory on this?

Inquiring minds want to know...

Thanks,
Kitty








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