Sarthaks Test
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An antenna has an impedance of 50Ω. An unmodulated AM signal produces a current of 4.8A. The percentage of modulation is 90. Calculate 

• The carrier power 

• The total power 

• Sideband power

1 Answer

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Best answer

R = 50Ω, 

IC = 4.8A, 

ma = 90% = \(\frac{90}{100}\) = 0.9

Power in sidebands 

= Pt – Pc

= 1613 - 1152

= 461W

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