A low power 0.18μm CMOS even-harmonic mixer

This paper presents a novel low power 0.18 mum CMOS even-harmonic mixer for digital TV (DTV) receivers. The proposed mixer topology can reduce the supply voltage required for the traditional stack topology to achieve low power operation. Operated at 1.8 V, the mixer consumes 2.6 mW of power. Without using integrated inductor for performance enhancement, the core mixer circuit occupies only 0.136 mm². The measured conversion gain and IIP3 are better than -4 dB and -1.3 dBm, respectively, from 450 MHz to 900 MHz. The LO-to-RF isolation is better than 58 dB.