FREQUENCY CONVERTER FOR THE SPECTRAL CONVERSION OF A STARTING SIGNAL, AND METHOD FOR THE SPECTRAL CONVERSION OF A STARTING SIGNAL

摘要

The invention relates to a frequency converter (100, 150) for the spectral conversion of a starting signal having an actual frequency into an end signal having a target frequency. The starting signal has an I component having a plurality of I component values and a Q component having a plurality of Q component values. Said frequency converter comprises a device (102) for selecting a plurality of partial signals (TS1 - TS4) based on the I component or the Q component. One partial signal comprises component values that can be selected according to a grid, and another partial signal comprises Q component values selected according to a grid. The inventive frequency converter (100) also comprises a device (104, 106, 108, 110) for weighting each of the partial signals, said device (104, 106, 108, 110) weighting each of the partial signals with a weighting factor in order to obtain a plurality of weighting signals. Furthermore, the frequency converter (100) comprises a device (112) for adding up the plurality of weighting signals (GS1 - GS4) in order to obtain the end signal having the target frequency. One such frequency converter (100) and a corresponding method for spectral conversion enables a spectral frequency converter (100, 150) to be provided in a simple manner both digitally and in terms of circuitry, in order to convert a starting signal having an actual frequency into an end signal having a target frequency.