MIXER WITH A FUNCTION FOR ELIMINATING A DIFFERENTIAL DIRECT CURRENT OFFSET, CAPABLE OF MODIFYING THE LINEARITY BY COMPENSATING THE DIFFERENTIAL DIRECT CURRENT OFFSET

摘要

PURPOSE: A mixer with a function for eliminating a differential direct current offset is provided to compensate a differential direct current offset by implementing a function for injecting and extracting a load current based on an output voltage.;CONSTITUTION: A loader(100) includes a power voltage terminal, a first loading part, and a second loading part. A mixing part(200) mixes an input signal and an oscillating signal to generate a signal and outputs the generated signal through a first output terminal and a second output terminal. A first output voltage detecting part(310) detects the output voltage of the first output terminal. A second output voltage detecting part(320) detects the output voltage of the second output terminal. First and second injection/extraction circuit parts(410) implement a current injection process into the loading parts or a current extraction process from the loading parts. A current controller(500) controls the entire current flowing through the first and second injection/extraction circuit parts.;COPYRIGHT KIPO 2011