Patent ID: 8664999

Claim:
A mixer arrangement for generating an analog output signal of the mixer arrangement by mixing an analog input signal of the mixer arrangement with a discrete-time mixing signal, the mixer arrangement comprising: a plurality of unit elements, each comprises: an enable port for receiving an enable signal of the unit element, an input port for receiving the analog input signal of the mixer arrangement, and an output port for outputting an output signal of the unit element, wherein, for each unit element, the unit element is adapted to be in an enabled mode in a first state of the enable signal and in a disabled mode in a second state of the enable signal, and generate the output signal of the unit element such that the output signal of the unit element is based on the analog input signal of the mixer arrangement if the unit element is in the enabled mode but not in the disabled mode, wherein, the unit elements are connected for generating a common output signal as the sum of the output signals from the unit elements, the mixer arrangement is adapted to generate the analog output signal of the mixer arrangement based on the common output signal, the mixer arrangement comprises a control unit adapted to supply the enable signals to the unit elements and control said enable signals based on the discrete-time mixing signal such that the number of enabled unit elements is proportional to a control signal derived from the discrete-time mixing signal, and the control unit is adapted to select the number of unit elements to be enabled when the control signal adopts a given value based on a parameter set of one or more control parameters, wherein said parameter set comprises one or more of the ratio f S /f M between the sampling frequency f S and the frequency f M of the discrete time mixing signal, and a phase shift of the discrete-time mixing signal, wherein the mixer arrangement is adapted to generate the analog output signal of the mixer arrangement proportional to the common output signal, the control signal is equal to the absolute value of the discrete-time mixing signal, and each unit element is adapted to generate the output signal of the unit element by mixing the analog input signal of the mixer arrangement with the sign of the discrete-time mixing signal in the enabled state.