A 3–14GHz ultra-wideband low-noise amplifier in 0.13μm CMOS using double-channel and global noise-cancellation

摘要

A 1.2V 3–14GHz ultra-wideband (UWB) CMOS low noise amplifier (LNA) is reported. By the utilization of double channel topology the input matching, flat gain as well as low noise is achieved simultaneously. The LNA obtains the maximum S21 of 14.2dB in band. Maximum gain rippling is only 0.1dB across the desired broadband. IIP3 of −3dBm at 8GHz is obtained. The I/O reflection coefficient are both better than −10.2dB. The noise figure (NF) falls from 3.72dB to 1.46dB with frequency monotonically, and the power dissipation is merely 10.5mW.