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A Low Power Folded Mixer Using Even Harmonic Technology

A CMOS down-conversion folded mixer for the radio frequency (RF) applications is presented. The proposed mixer composes of frequency doubling circuits, transconductance stages, and folded switching stages. With input 1.9 GHz RF signals of -40 dBm driven by 0.948 GHz local oscillation (LO) signals of 0 dBm, the mixer shows a good performance in both the high linearity and the low power consumption. The third-order input intercept point (IIP3) and the power consumption including the buffer stage are -3dBm and 6.4mW, respectively. The proposed mixer is designed and fabricated by tsmc 0.18mum 1P6M CMOS process with the size of 0.989 x 0.559mm2.