A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is

• 10 watts
• 1 watt
• 0.1 watt
• 0.01 watt

Correct Answer: 10 watts

Explanation:

= 10¹ ⟹ P_r = 10 watt.