Patent ID: 7138857
Filing Date: 2006-11-21
Classification: H03D

Abstract:
1. A signal processing device, comprising: a conversion device comprising a first signal input, a local oscillator input and an output having a first and a second tap configured to output a differential current signal thereat, said conversion device configured to use an oscillator signal received at the local oscillator input to convert an input signal applied to the signal input to the differential current signal provided to the first and second taps comprising the output; a first controllable current source coupled to the first tap of the output of the conversion device; a second controllable current source coupled to the second tap of the output of the conversion device; a first amplification device comprising a current signal input having a first connection coupled to the first tap of the output of the conversion device and a second connection coupled to the second tap of the output of the conversion device, and an output having a first and a second tap, wherein the amplification device is configured to amplify the differential current signal applied to the first and second connections; wherein the first and second controllable currents sources are configured to control a common mode potential at the first and second connections of the first amplification device; a first charge store connected to the first connection of the first amplification device and to a second tap of the output of the amplification device, and a first resistive load connected in parallel with said first charge store; and a second charge store connected to the second connection of the first amplification device and to a first tap of the output of the amplification device, and a second resistive load connected in parallel with said second charge store.