Low flicker noise active mixer and method thereof

摘要

A low flicker noise active mixer comprises a trans-conductance section, a switching quad, and a load section. The trans-conductance section converts a voltage signal pair into a first current signal pair. The switching quad converts the first current signal pair into a second signal pair in a manner controlled by a LO (local oscillator) signal pair. The load section provides a loading to the second current signal pair using a pair of commutative active loads to convert the second current signal pair into an output voltage signal pair.