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← ScienceWhich consequence results when resonant frequency shifts beyond filter bandwidth?
A)Signal attenuation increases sharply✓
B)Increased harmonic distortion appears
C)Group delay remains mostly constant
D)Phase noise decreases gradually
💡 Explanation
Signal attenuation increases sharply because detuning causes decreased signal transfer in the frequency response, due to resonance. The transfer function rolls off quickly therefore, leading to rejection, rather than simply adding distortion under different operating conditions.
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