Digitizer arrangement

A digitizer arrangement for converting an analogue signal into a digital signal, comprising:

• a first AID converter, said first AID converter being arranged to convert said analogue signal into a first digital signal with a first sampling frequency, the first sampling frequency being lower than the frequency of the analogue signal;
• a second A/D converter, said second A/D converter being arranged to convert said high frequency analogue signal into a second digital signal with a second sampling frequency, the second sampling frequency being lower than the frequency of the analogue signal, said first and second sampling frequencies being different and with a non-harmonic relationship;
• and
• means for combining said first and second digital signals into a third digital signal with a third sampling frequency that is at least a multiple of said first and second sampling frequencies.