[SI-LIST] Re: Discontinuities on PCB
- From: <jose_moreira@xxxxxxxxxxx>
- To: <ch_harrington@xxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Thu, 12 May 2005 12:55:25 +0200
Hi
Gupta's book "Microstrip Lines and Slotlines" contains work on
Microstrips and discontinuities in Microstrips. Maybe you should take a
look there. =20
Best Regards
Jose
____________________________________________________
Jose Moreira
Application Consultant
STS Center of Expertise
Agilent Technologies R&D and Marketing GmbH & Co.KG
Herrenberger Strasse 130
CCST-BUS
D-71034 Boeblingen
Germany
Phone: +49-7031/464-6493
Fax: +49-7031/464-4708
Email: jose_moreira@xxxxxxxxxxx
______________________________________________________
=20
=20
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Charles Harrington
Sent: Donnerstag, 12. Mai 2005 12:36
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Discontinuities on PCB
Hello,
When a TEM (or quasi-TEM) signal propagating on a microstrip trace meets
a discontinuity (e.g., a via) on a substrate at microwave frequencies,
higher-order modes are excited at the discontinuity, leading to
reflections.
Can anyone tell me exactly what kind of modes are excited and why they
are excited. How far away from the discontinuity can they propagate and
how does this depend on the operating frequency.
I'm a postgraduate student currently working on discontinuities on PCB.
My search for relevant literature led me to this list. So, I'll
appreciate any help.=20
Charles.
=09
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