Patent ID: 7602856

Claim:
A mixer device for mixing a signal, representing a sequence of time-discrete values with a time interval between two time-discrete values defining a first sampling frequency, from a current frequency to a target frequency, comprising: a first mixer which is implemented to convert the signal from the current frequency to an intermediate frequency to obtain an intermediate frequency signal which is based on the first sampling frequency, wherein a spectral interval between the intermediate frequency and the current frequency depends on the first sampling frequency; wherein the first mixer comprises a controller having a control input, wherein the controller is implemented to cause, in response to a signal applied to the control input in the first mixer, an increase or a decrease of the intermediate frequency with regard to the current frequency or no frequency conversion of the intermediate frequency with regard to the current frequency in the first mixer; a converter for converting the intermediate frequency signal into a converted intermediate frequency signal which is based on a second sampling frequency, wherein the first sampling frequency and the second sampling frequency are different from each other; and a second mixer which is implemented to convert the converted intermediate frequency signal from the intermediate frequency to the target frequency to obtain a target frequency signal which is based on the second sampling frequency, wherein a spectral interval between the target frequency and the intermediate frequency depends on the second sampling frequency; wherein the signal includes four consecutive signal values, wherein the first mixer includes a demultiplexer for allocating one signal value each into one of four processing paths arranged in parallel, wherein in each processing path a processor for determining a result of a multiplication of a signal value by a multiplication factor from a set of multiplication factors is arranged, and wherein the first mixer is implemented, in response to a signal at the control input, to select a set of multiplication factors associated with the signal from a plurality of sets of multiplication factors.