A 2.4-GHz fractional-N PLL with a PFD/CP linearization and an improved CP circuit. - Ching-Lung Ti; Yao-Hong Liu; Tsung-Hsien Lin (ISCAS, 2008)

Dynamic Current-Matching Charge Pump and Gated-Offset Linearization Technique for Delta-Sigma Fractional- N PLLs. - Tsung-Hsien Lin; Ching-Lung Ti; Yao-Hong Liu (IEEE Trans. Circuits Syst. I Regul. Pap., 2009)