Systems and methods for suppressing radio interference from a noise source via active filtering

A system for suppressing interference in a radio of a motor vehicle, comprising:

• an electric motor having an operating frequency;
• a memory configured to store a threshold signal strength;
• a re-configurable filter adapted to selectively filter radio signals of a harmonic of the operating frequency;
• and
• a controller coupled to the memory and the re-configurable filter, the controller configured to:
• compare a signal strength of a received signal to the threshold signal strength, and
• turn ON the re-configurable filter if the signal strength of the received signal is less than or equal to the threshold signal strength.

A method for suppressing interference from a noise source having an operating frequency in a motor vehicle including a radio with a re-configurable filter configured to filter signals of a harmonic of the operating frequency, the method comprising the steps of:

• determining a noise signature for the motor vehicle;
• associating a signal strength threshold with the noise signature;
• comparing a signal strength of a tuned radio station to the signal strength threshold;
• and
• turning ON the filter if the signal strength is less than or equal to the signal strength threshold.