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← ScienceWhich unintended outcome results when a PCB trace impedance mismatch occurs during high-frequency signal transmission?
A)Increased electromagnetic interference (EMI)✓
B)Reduced trace current-carrying capacity
C)Enhanced signal propagation velocity
D)Minimized transmission line inductance
💡 Explanation
Increased EMI results from impedance mismatches because reflection introduces spurious signals along the transmission line; this generates harmonics that radiate electromagnetic waves, therefore increases EMI rather than improves signal integrity which occurs in matched conditions.
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