Hi, I just wanted to find out about the fact that " Lumped model overestimates the noise voltage" is it due to the fact that it ignores high frequency components and attenuation is proportional to the frequency, the higher the frequency the higher the attenuation. Where as a distributed model consider high frequency components and eattenuates the noise voltage. Can anyone please clarify, how the attenuation constant of simple lumped model and the attenuation constant of 2-segment distributed model are related at high and low frequencies? Thanks Haritha --------------------------------- Do you Yahoo!? The New Yahoo! Shopping - with improved product search ------------------------------------------------------------------ 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 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