[SI-LIST] Re: Return current of a trace in stripline
- From: "Antonis Orphanou" <orphanou@xxxxxxxxxxxx>
- To: "bala89si@xxxxxxxxx" <bala89si@xxxxxxxxx>, "si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>
- Date: Mon, 5 Aug 2013 18:12:35 +0000
The ground will be continuous anyways. If there is not a continuous conductive
path to complete it then it will continue through voltage gradients as a
displacement current.
Thanks
Antonis.
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On
Behalf Of Balaji G
Sent: Sunday, August 04, 2013 11:43 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Return current of a trace in stripline
Hi Experts,
We discussed a lot regarding path of return current before and this is
regarding the path of return current in a stripline trace. As far I learnt,
the return current will take the path of least resistance at low
frequencies and path of less inductance at high frequency and hence the
reason that return current travels in the plane directly under the signal's
trace. My question is if we consider a signal travelling in a stripline
which is sandwiched between the ground and split power plane where the
signal to ground distance is 3.7mils and signal to split power plane
distance is 4.3mils, should we worry about the split power plane at high
frequency (say 3GHz) as the signal to ground distance is the path of least
inductance and all the return current for high frequency signal trace flows
in the ground plane causing no reflection/ EMI issues? Is my thinking
right? Can you please provide your thoughts on this?
Regards,
Balaji
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