Hi experts, I read from an application note that the effective radius of the capacitance if 0.005*lamda. lamda is the actual wavelength of the capacitor's resonance frequency.i.e, 2pi*vp*sqrt(LC). where vp is the propagation velocity. From this equation, i infer that the inductance(ESL) and capacitance are directly proportional in square root. i.e, radius increase with the increase of ESL or C. But in paper "Effective Decoupling Radius of Decoupling Capacitor" i found it is inversely proportional. Please suggest me where i miss the way. Thanks and Regards, Jack ------------------------------------------------------------------ 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 forum is accessible at: http://tech.groups.yahoo.com/group/si-list List archives are viewable at: //www.freelists.org/archives/si-list Old (prior to June 6, 2001) list archives are viewable at: http://www.qsl.net/wb6tpu