Hello All, I am working on a RF Layout. I looked into some design guidelines and had some doubt on gnd via spacing requirement . Guideline said that ë/20 distance has to be maintained between gnd vias that are stitched on either side of the RF signal Can any one please let me know the reason for this requirement ? I also would like to know what would be the gnd backoff distance from the RF signal and the reason . Thanks Arvind.H ------------------------------------------------------------------ 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 or at our remote archives: http://groups.yahoo.com/group/si-list/messages Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu