Question: 4 . 6 . A 2 - meter long center - fed dipole antenna operates in the AM broadcast band at 1 MHz . The

4.6. A 2-meter long center-fed dipole antenna operates in the AM broadcast band at 1MHz. The dipole is made of copper wire with a radius of 1meter. (a) Determine the radiation efficiency of the antenna (b) What is the antenna gain in decibels? (c) What antenna current is required so that the antenna will radiate 20W, and how much power will the generator have to supply the antenna?

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