[SI-LIST] Re: Gigabit Ethernet signal on Flex PCB
- From: steve weir <weirsi@xxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Wed, 05 Oct 2011 12:08:57 -0700
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
>>
>>
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>
> --
> Steve Weir
> IPBLOX, LLC
> 150 N. Center St. #211
> Reno, NV 89501
> www.ipblox.com
>
> (775) 299-4236 Business
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--
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
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