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← ScienceWhich risk escalates on a PCB trace as signal frequency nears 1 GHz?
A)Electromagnetic interference (EMI) increases sharply✓
B)Capacitive loading effects are heavily mitigated
C)Dielectric breakdown risk substantially decreases
D)Copper trace resistance becomes frequency-independent
💡 Explanation
Electromagnetic interference increases due to transmission line effects becoming significant, meaning signal reflections and radiation rise with frequency causing more interference because signal propagates, therefore it is EMI that increases, rather than reduced capacitive load or dielectric breakdown, because impedance mismatch worsens.
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