There are a series of specifications from IPC dealing with High Speed / High Frequency design and materials. Check out IPC-D-316, IPC-D-317, IPC-D-318 & IPC-2141. Feel free to email me directly if you need further assistance. Regards, Tom Bresnan Chairman, IPC High Speed/High Frequency Subcommittee [log in to unmask] ______________________________ Reply Separator _________________________________ Subject: PCB for high frequency Author: [log in to unmask] at INTERNET_GATEWAY Date: 3/28/97 12:07 AM Does anyone out there have information regarding how to select PCB materials for high frequency (from a few hundred MHz to several GHz) hibrid signals. The board has to be small and very densed in SMT or COB. And which type of layout technique is the best choice. Thank you for your info. J.C. *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * *************************************************************************** *************************************************************************** * TechNet mail list is provided as a service by IPC using SmartList v3.05 * *************************************************************************** * To subscribe/unsubscribe send a message <to: [log in to unmask]> * * with <subject: subscribe/unsubscribe> and no text in the body. * *************************************************************************** * If you are having a problem with the IPC TechNet forum please contact * * Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask] * ***************************************************************************