A homogenous path in flex should not present any unusual issues. Steve. On 10/5/2011 11:19 AM, Manojkumar Chidambaram - ERS, HCL Tech wrote: > Hi Sreve, > > In my case the flex is going to carry the signals after the Magnetics. So > Flex will be the complete physical path for Ethernet signal. > > Thanks, > Manoj > > > -----Original Message----- > From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On > Behalf Of steve weir > Sent: Tuesday, October 04, 2011 3:53 PM > To: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: Gigabit Ethernet signal on Flex PCB > > How you design the etch depends on which end you place your magnetics. > Mode conversion will be a consideration to your geometry choices if the flex > is on the ingress/egress side of the magnetics. > > Steve. > On 10/4/2011 3:37 PM, Manojkumar Chidambaram - ERS, HCL Tech wrote: >> Dear Experts, >> For one of our product it is required to route the Gigabit Ethernet signal >> in a 3 layer (S-G-S) stiffened flex PCB board of length 5 inch (Audio and >> other control signals also sharing the same flex). >> >> As I could see that the, IEEE802.3 specifically suggest an Ethernet >> Physical cable for Gigabit Ethernet; So I would like to know, >> >> >> 1. Will there be any significant impact on signal quality if I take >> these signal with a Flex PCB physical medium? >> >> 2. Do I need to pay attention on any other special requirement to >> route Gigabit Ethernet signal in the Flex PCB when compared to other high >> speed Flex PCB? >> >> Please share your experience, and important SI / EMI aspect I need to look >> for this. >> >> >> Thanks and Regards >> Manojkumar Chidambaram >> >> >> ------------------------------------------------------------------ >> 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 technical documents are available at: >> http://www.si-list.net >> >> 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 >> >> >> > > -- > Steve Weir > IPBLOX, LLC > 150 N. Center St. #211 > Reno, NV 89501 > www.ipblox.com > > (775) 299-4236 Business > (866) 675-4630 Toll-free > (707) 780-1951 Fax > > > ------------------------------------------------------------------ > 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 technical documents are available at: > http://www.si-list.net > > 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 > > > ------------------------------------------------------------------ > 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 technical documents are available at: > http://www.si-list.net > > 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 > > > -- Steve Weir IPBLOX, LLC 150 N. Center St. #211 Reno, NV 89501 www.ipblox.com (775) 299-4236 Business (866) 675-4630 Toll-free (707) 780-1951 Fax ------------------------------------------------------------------ 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 technical documents are available at: http://www.si-list.net 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