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← TechnologyWhich outcome occurs when increased surface roughness causes path obstruction on a phased array antenna?
A)Increased side lobe power✓
B)Reduced beamforming errors
C)Improved impedance matching
D)Enhanced signal to noise ratio
💡 Explanation
Increased surface roughness leads to greater signal scattering by the **Huygens-Fresnel principle**, where each point on the rough surface re-radiates as a secondary source. Therefore, side lobe power is increased, because scattered signals contribute to off-axis radiation, rather than improved beam quality.
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