Patent ID: 7243037
Filing Date: 2007-07-10
Classification: H03F,H04B

Abstract:
1. A signal processing device, comprising: a signal input comprising a first terminal and a second terminal, the first terminal configured to receive a first input signal component corresponding to an in-phase signal component, and the second input terminal configured to receive a second input signal component corresponding to a quadrature component; a modulation unit comprising two input terminals and two output terminals, wherein the two input terminals are coupled to the first and second input terminals, and wherein the modulation unit is configured to convert the first component and the second component of the input signal at its input terminals to a third component that represents an amplitude portion of the signal at its input terminals, and a fourth component that represents a phase portion of the signal at its input terminals; a correction device comprising a control input terminal configured to receive a reference signal, comprising a signal terminal configured to receive at least one of the first and second components of the input signal or at least one of the third and fourth components, wherein the correction device is configured to generate a control signal dependent on a comparison of the reference signal with a signal at the signal terminal; and a multiplier comprising a control input connected to the correction device, and configured to change at least one of the first and second components of the input signal or at least one of the third and fourth components as a function of the control signal provided by the correction device.