Patent ID: 6255889
Filing Date: 2001-07-03
Classification: G06G,H03D,H03F

Abstract:
A mixer comprising:a mixer common node;a first differential amplifier having a common emitter node;a second differential amplifier having a common emitter node, the second differential amplifier cross connected with the first differential amplifier;a first transistor having a collector coupled to the common emitter node of the first differential amplifier;a second transistor having a collector coupled to the common emitter node of the second differential amplifier;a first series feedback reactance element coupled between an emitter of the first transistor and the mixer common node, the first series feedback reactance element includes an inductor;a second series feedback reactance element coupled between an emitter of the second transistor and the mixer common node, the second series feedback reactance element includes an another inductor;a first shunt feedback reactance element coupled between a base and the collector of the first transistor, the first shunt feedback reactance element includes a first resistance-capacitance element; anda second shunt feedback reactance element coupled between a base and the collector of the second transistor, the second shunt feedback reactance element includes a second resistance-capacitance element.