Frequency modulation tracking for band rejection to reduce dynamic range

A radio comprising:

• a memory;
• a receiver analog front end configured to provide an analog signal based on a received radio frequency signal;
• an analog-to-digital converter configured to provide a digital in-phase signal corresponding to an in-phase component of the received radio frequency signal and a digital quadrature signal corresponding to a quadrature component of the received radio frequency signal based on the analog signal;
• and
• a processor configured to execute instructions stored in the memory thereby causing the processor to demodulate the digital in-phase signal and the digital quadrature signal to generate an instantaneous frequency signal and to select a center frequency of a selectable filter according to whether an interfering signal is detected in a target frequency band of the received radio frequency signal, the interfering signal is a frequency modulated signal having at least a frequency equal to the center frequency, the center frequency being selected from a predetermined frequency and an estimated center frequency determined using the instantaneous frequency signal.