Hello, I have a question, I have downloaded POLAR calculator from the web and I was looking for a calculation/example/formula about: Lat's say I have 2 or more microstrips on component side (CS). Is it good to fill up with GND among the signals (on CS)? I want that the signals will be 50 OHM. (I am not doing it for cooper balancing, I am doing it to reduce noise!!). Maybe filling up GND among the 50 OHM signals will influance badly on the impedance. So my question is: Is it O.K./recommended to fill up GND among the signals? (I am not talking about the GND plane from below). Waiting for your answer, Thanks, Meiri Azari Hardware engineer SanDisk Israel E-mail at office: mazari@xxxxxxxxxxx E-mail at home: shula2@xxxxxxxxxxxxxxxx TL (office): 972-4-9873111 Ext. 219 Mobile: 972-52-813862 Fax (office): 972-4-9873123 www.sandisk.com ------------------------------------------------------------------ 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.org 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