Frequency-Domain Optimization of Digital Switching Noise Based on Clock Scheduling. - Xin Fan 003; Mikkel B. Stegmann; Oliver Schrape; Steffen Zeidler 001; Isac G. Jensen; Jannich Thorsen; Tobias Bjerregaard; Milos Krstic (IEEE Trans. Circuits Syst. I Regul. Pap., 2016)