Patent ID: 8213869

Claim:
A device for filtering electromagnetic interference generated by an antenna ( 20 ) of a transmitter on a sensor ( 30 ) sensitive to electromagnetic waves, characterized in that it comprises in particular: i. means suitable for sampling an signal (SN IN ) received by the sensor ( 30 ), ii. means making it possible to count down an elapsed time, called the detection time, after a sampled signal has exceeded a threshold value (S), said signal, before exceeding the threshold value (S), being in a range of standard values, iii. means making it possible to compare in real time a detection time with a threshold time value (T MAX ), iv. means suitable for providing a diagnosis of electromagnetic interference to be filtered if the sampled signal reverts to a standard value after a detection time of less than the threshold time value (T MAX ), and a diagnosis of an uninterfered sampled signal if this is not the case, v. means for generating an output signal (SN OUT ) from the sensor eliminating the diagnosed electromagnetic interference.