Patent ID: 8374568

Claim:
A quadrature mixer comprising: one or more harmonic reject mixers, each of the one or more harmonic reject mixers comprising: a common RF input, a control input coupled to a control signal, an LO generator operable to generate a plurality of phased LO signals, wherein each of the plurality of phased LO signals is generated according to a respective transition of a plurality of transitions of the control signal, and a plurality of switching mixer circuits, wherein each of the plurality of switching mixer circuits comprises a first input coupled to the common RF input and a second input coupled to one of the plurality of phased LO signals; a control generator operable to generate the control signal comprising the plurality of transitions during a period of each phased LO signal; a first combiner having inputs coupled to a first subset of outputs from the one or more harmonic reject mixers, and an output configured to provide a quadrature output; and a second combiner having inputs coupled to a second subset of outputs from the one or more harmonic reject mixers, and an output configured to provide an in-phase output; wherein the first subset of outputs is shifted with respect to the second set of outputs.