Patent ID: 7809348
Filing Date: 2010-10-05
Classification: H03D

Abstract:
1. A compensating circuit for a mixer stage, wherein the mixer stage has an input stage having first and second input signal terminals to which an input signal for mixing is applied and has, following the input stage, a switching stage for mixing a differential input signal, which is obtained from the input stage as a function of the input signal, with an oscillator signal, the compensating circuit comprising: an input connected to the first and second input signal terminals of the input stage; an output connected to an input signal terminal of the switching stage at which the differential input signal obtained by the input stage is present; a compensating stage for compensating intermodulation products which provides a compensating signal at the output of the compensating circuit; and a compensating input stage having a voltage divider for influencing an amplitude and/or phase of the input signal, wherein the compensating input stage is configured to supply a modified input signal to the compensating stage, and wherein the voltage divider is connectable to the first and second input signal terminals of the input stage.