Dear all Now we are studying the effect of power noise on jitter. We meet a problem, how to couple noise to the PDN. For example, we want to couple noise of 25MHz into the PDN of oscillator. However there is impedance dismatch. The impedance of signal source is about 50ohm and that of PDN is about 0.1ohm. The energy would be reflected. Any advice would be helpful Best Regards Zhangkun 2008.5.14 ------------------------------------------------------------------ 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