Complex IF Harmonic Rejection Mixer for Non-Contiguous Dual C a r r i e rR e c e

Abstract

This paper presents a complex IF mixer for a double conversion receiver architecture to be used for non-contiguous dual carrier reception as speci fied in upcoming releases of 3GPP standards. The complex IF mixer contains four harmonic rejec- tion (HR) mixers, each of which is implemented with 64 passive unit cell mixers, clocked by a ring-oscillator based phase-locked loop and driven by sequencers tha t represent thermometer-coded oversampled sinusoidal LO wave forms. Each HR mixer is fol- lowed