[SI-LIST] Re: Microstrip or stripline for date rates 10Gbps
- From: "Moreira, Jose-Antonio" <Jose.Moreira@xxxxxxxxxxxxx>
- To: "emcesd@xxxxxxx" <emcesd@xxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Tue, 09 Jul 2013 12:02:33 +0000
Before the surface roughness starts to hit, the microstrip plating and possible
solder mask on top of the microstrip copper already has an impact on the loss.
The comment that stripline shows more loss at "lower frequencies" because it
has a lossy dielectric on top and bottom is not fully correct. It depends what
you have on top of the copper trace in a microstrip (i.e. plating) and how
lossy the dielectric material of the stripline is.
There has been some discussion on this topic before and a lot of good papers
were presented at Designcon this year.
Jose
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Tesla
Sent: Tuesday, July 09, 2013 1:42 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Microstrip or stripline for date rates 10Gbps
Hi, experts
Sorry to take this thread out of box again. Have seen the old threads and
papers, still want to listen your ideas.
For board use medium loss material(ISOLA FR408), microstrip and stripline,
which has less loss per inch below frequency 10GHz?
In a ideal world, stripline show more loss due to all the electric field in the
lossy dielectric. but the copper roughness change that battle because generally
surface layer using rough copeer foil.
Could someoney provide some advice or measured date or pulished papers about
this issue?
Thanks and Regards.
Tesla.
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