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← TechnologyWhich outcome occurs when a local oscillator's frequency drifts in a homodyne receiver?
A)Signal fading increases noticeably✓
B)Image frequency interference occurs
C)Quadrature amplitude modulation ceases
D)Signal strength remains effectively constant
💡 Explanation
Signal fading increases because a homodyne receiver relies on the **carrier synchronization** mechanism. Therefore, drift misaligns the demodulation reference, reducing the signal amplitude. This degradation is more immediate rather than developing image frequencies, which is related to super heterodyning.
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