M.Sato, H.Abe, M.Hamada, H.Majima, T.Kuroda, and H. Ishikuro, "A 90nm CMOS Highly Linear Clock Bootstrapped RF Sampler Operating at Wide Frequency Range of 0.5GHz to 5GHz,"in Proc. 2009 IEEE Radio Frequency Integrated Circuits Symposium, Boston, MA, USA, June. 7-9, 2009, pp.391-394.