Hi Istvan,
It's common for flex designs to have a metal layer above (and/or below) the
design as a "shield" (google "flex circuit shield"). These are separate from
the reference planes and, as Scott said, generally only grounded at their ends.
I'm trying to understand if they serve any real purpose.
Jeff Loyer
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On ;
Behalf Of Istvan Novak
Sent: Wednesday, October 25, 2017 3:56 PM
To: dmarc-noreply@xxxxxxxxxxxxx; si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Re: Why do flex circuits need shields?
Jeff,
What do you mean by shield? Co-planar grounded traces or an overall
wrap-around shield?
Regards,
Istvan Novak
Oracle
On 10/25/2017 3:06 PM, Loyer, Jeff (Redacted sender jwloyer for DMARC)
wrote:
Can someone explain why shields are so common on flex designs? What is
fundamentally different such that shields are needed on a microstrip flex
design but not a microstrip rigid design?
Jeff Loyer
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
