METHOD FOR NOTCH FILTERING A DIGITAL SIGNAL, AND CORRESPONDING ELECTRONIC DEVICE

Electronic device, comprising sigma-delta modulation means (SDM) adapted to operate with a clock signal and having output means adapted to deliver a digital data signal, first means (PLL) adapted to deliver a radiofrequency transposition signal, and a notch filter including at least two identical radiofrequency digital to analog conversion blocks (RDCi), each having first input means coupled to said output means, second input means adapted to receive said radiofrequency transposition signal and second output means adapted to deliver a radiofrequency analog signal (ARFSi), digital delay means (DM) controlled by said clock signal and including a delay block connected between the two first input means, the frequency of a notch of said notch filter being related to the delay's value of the delay block, and summation means (SM) adapted to sum said radiofrequency analog signals (ARFSi).