If the boards overlap in the XY plane, the Paricon material can ineed offer both a compact and very pristine interface. Teraspeed did tests with Paricon material a few years ago passing 40Gbps signals. There should be a DesignCon 2008 and/or 2009 paper on that work. Steve. Roger Weiss wrote: > Hi Hirshtal, > You can connect the 2 boards directly to each other using a sheet of Paricon > elastomer. You design the boards with an array of matching pads on both > boards, align and clamp. You can also use coaxial structures but this will > not be necessary in this application. This provides a virtually invisible > interconnection (<0.3dB loss at 40 GHz) > > Regards, > Roger > > > > Roger E. Weiss, PhD > 421 Currant Rd > Fall River, MA 02720 > (508) 676 8988 > (508) 676 8111 (fax) > (508) 889 7290 (mobile) > PLEASE VISIT THE FOLLOWING LITERATURE LINK FOR 'PRODUCT APPLICATION GUIDE > LINES' AND MORE: Paricon Literature > > > -----Original Message----- > From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] On > Behalf Of steve weir > Sent: Wednesday, February 16, 2011 2:44 AM > To: Hirshtal Itzhak > Cc: si-list@xxxxxxxxxxxxx > Subject: [SI-LIST] Re: Seeking a Solution for connecting 2 PCBs > > Hirshtal, polyimide based flex can be made that closely matches the > characteristics of your flex-rigid board. Pyralux AP is one such product. > > Steve. > Hirshtal Itzhak wrote: > >> Hi All, >> >> >> We have a design which is composed of 2 connected boards - one is a >> flex-rigid and the other a rigid board. Most of the signals passing >> between the 2 boards are high-speed (<= 3.125GHz) diff signals. >> >> >> >> Right now the plan is to connect the 2 boards using high-speed >> connectors, but the connectors take a lot of space on the rigid board so >> we're looking for a solution which will not include a connector on the >> rigid side, and also will be reliable from both the PCB manufacturing >> perspective and SI perspective. >> >> >> >> Do you know of such a solution? >> >> >> >> Are there in the market any solutions based on solderable flat cables? >> >> >> >> The solution is to work on lengths of no more than 2" from the >> flex-rigid connector to the rigid solderings. >> >> >> >> Thanks >> >> >> >> Itzhak Hirshtal >> >> >> >> The information contained in this communication is proprietary to Israel >> Aerospace Industries Ltd., ELTA Systems Ltd. >> and/or third parties, may contain classified or privileged information, and >> is intended only for >> the use of the intended addressee thereof. If you are not the intended >> addressee, please be aware >> that any use, disclosure, distribution and/or copying of this communication >> is strictly prohibited. >> If you receive this communication in error, please notify the sender >> immediately and delete it from >> your computer. Thank you. >> >> >> This message is processed by the PrivaWall Email Security Server. >> >> >> >> >> ------------------------------------------------------------------ >> 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