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 as shown in the snap shot. 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