[SI-LIST] : Antenna Problem on the Board

About this list Date view Thread view Subject view Author view

From: subramanya C K (subramanya.murthy@wipro.com)
Date: Tue May 22 2001 - 22:51:09 PDT


Hello SI Gurus,
I have a basic question here. We all know that "Right angled traces are never used on PCBs" as the
act as antennas (better antennas than the curved traces). In an article I read that this radiation
is due not to the frequency of the signal , but to it's rise time. Could someone please explain me
this theory ?

Thanks and Regards,
Subramanya C K

------=_NextPart_000_01B0_01C0E37A.77C21FE0
Content-Type: image/gif;
        name="Tech Tools.gif"
Content-Transfer-Encoding: base64
Content-ID: <01af01c0e34c$5deff340$8b53a8c0@wipro.com>
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------=_NextPart_000_01B0_01C0E37A.77C21FE0--

**** To unsubscribe from si-list or si-list-digest: send e-mail to
majordomo@silab.eng.sun.com. In the BODY of message put: UNSUBSCRIBE
si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Jun 21 2001 - 10:12:05 PDT