A ultra-wideband, downconversion folded mixer in 0.13-um CMOS technology

In this paper, a double-balanced common gate folded Gilbert mixer with low voltage supply and low power consumption is presented in 0.13 μm CMOS technology. This mixer features the common gate gm stage following by a folded LO switch stage. These two stages can be biased independently to achieve gain, linearity and noise figure specification in a wideband range. The simulation shows this mixer can achieve 6.3~11.8dB conversion gain, 9.8~15.2dB noise figure, 39dBm~48dBm second-order intermodulation intercept point(OIP2), and around -7.5dBm Input Referred 1dB compression point between 2.5GHz~7.5GHz with 7mW power consumption under 1.5V voltage supply.