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← TechnologyWhich inefficiency occurs when an antenna array's elements activate incorrectly?
A)Sidelobe level increases drastically✓
B)Beamwidth exhibits greater narrowing
C)Front-to-back ratio improves slightly
D)Radiation resistance shows marked decline
💡 Explanation
Sidelobe elevation results from antenna element misphasing because constructive interference occurs away from the main lobe due to incorrect phase relationships between antenna elements; sidelobe gain is increased, therefore significantly limiting directional performance on receiving weak signals, rather than signal strength decline.
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