Patent ID: 8285240
Filing Date: 2012-10-09
Classification: H03D,H03H,H04B,H04J,H04L

Abstract:
1. A quadrature mixer comprising: a polyphase filter adapted to generate a plurality of phases of an input signal; a plurality of harmonic reject mixers, each harmonic reject mixer having a first input receiving one of the plurality of phases of the input signal, and a second input receiving one of a plurality of phases of a local oscillator (LO) signal, wherein each harmonic reject mixer comprises: a first combiner adapted to combine outputs of a first subset of the plurality of harmonic reject mixers to generate a quadrature output signal associated with the quadrature mixer; and a second combiner adapted to combine outputs of a second subset of the plurality of harmonic reject mixers to generated an in-phase output signal associated with the quadrature mixer.