LISTSERV - DESIGNERCOUNCIL Archives

DESIGNERCOUNCIL Archives

December 2004

DesignerCouncil@IPC.ORG

	LISTSERV Archives
	DESIGNERCOUNCIL Home
	DESIGNERCOUNCIL December 2004

	Log In
	Register

	Subscribe or Unsubscribe

	Search Archives

Options:	Use Monospaced Font Show Text Part by Default Show All Mail Headers
Message:	[<< First] [< Prev] [Next >] [Last >>]
Topic:	[<< First] [< Prev] [Next >] [Last >>]
Author:	[<< First] [< Prev] [Next >] [Last >>]

Subject:	Re: Another RF Question??
From:	Roger Stoops <[log in to unmask]>
Reply To:	(Designers Council Forum)
Date:	Thu, 2 Dec 2004 15:01:20 -0500
Content-Type:	text/plain
Parts/Attachments:	text/plain (65 lines)

RF as in GHz or Mhz?  For MHz, no problem.  Otherwise, above 1 GHz Martyn's answer is very practical.  A curved trace is even better in some situations, if your CAD system allows for it (most do I believe).  The change in impedance is the big gotcha here.

And nothing falls off the edge.  (Else one could start a recycling business collecting all those electrons falling off the edge and sell them back...hahahaha)  Current follows path of least resistance/impedance.

And like Bill said, check out Doug's website at http://www.ultracad.com .

Roger


-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]]On Behalf Of Kitty
Hines
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








**This transmission may contain information that is privileged,
confidential and/or exempt from disclosure under applicable law. If you
are not the intended recipient, you are hereby notified that any
disclosure, copying, distribution, or use of the information contained
herein (including any reliance thereon) is STRICTLY PROHIBITED. If you
received this transmission in error, please immediately contact the
sender and destroy the material in its entirety, whether in electronic
or hard copy format. Thank you.**



---------------------------------------------------------------------------------
DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF DesignerCouncil.
To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL)
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
---------------------------------------------------------------------------------

---------------------------------------------------------------------------------
DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF DesignerCouncil.
To temporarily stop/(restart) delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL/(MAIL)
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
---------------------------------------------------------------------------------

ATOM RSS1 RSS2

LISTSERV.IPC.ORG