Patent ID: 6219536
Filing Date: 2001-04-17
Classification: H03D

Abstract:
A mixer circuit comprising:a first transistor, a collector thereof being connected to a power supply terminal, an emitter thereof connected to a node and a base thereof connected to a first input terminal;a second transistor, a base thereof being connected to a second input terminal, an emitter thereof connected to a ground terminal and a collector thereof connected to the node;a first bias circuit for biasing base potential of the first transistor;a second bias circuit for biasing base potential of the second transistor;a third transistor, a base thereof being connected to the node and a collector thereof connected to an output terminal;a first resistor connected between the collector of the third transistor and the power supply terminal, and;a parallel connection of a second resistor and a capacitor connected between an emitter of the third transistor and the ground terminal.