Patent ID: 7319851
Filing Date: 2008-01-15
Classification: H03D

Abstract:
1. A mixer circuit comprising an input node for receiving an input signal, a first output node, and a second output node, voltage to current conversion means and switching means operatively coupled to each other and to the input node, the first output node and the second output node to generate a mixed input signal at the first output node and the second output node in response to an oscillator signal, wherein the voltage to current conversion means comprises a first voltage to current converter having a first control electrode coupled to the input node and a first main conductive path having a first output electrode coupled to the first output node and a first switching electrode coupled to the switching means; a second voltage to current converter having a second control electrode coupled to the input node and a second main conductive path having a second output electrode coupled to the second output node and a second switching electrode coupled to the switching means; and the switching means is arranged to couple: the first switching electrode to a first supply voltage and the second switching electrode to a second supply voltage during a first phase of the oscillator signal, and the first switching electrode to the second supply voltage and the second switching electrode to the first supply voltage during a second phase of the oscillator signal wherein at least one of the first supply voltage and the second supply voltage is fixed.