Question
Question: If both the length of an antenna and the wavelength of the signal to be transmitted are doubled, the...
If both the length of an antenna and the wavelength of the signal to be transmitted are doubled, the power radiated by the antenna
A
Is doubled
B
Is halved
C
Remains constant
D
Is quadrupled
Answer
Remains constant
Explanation
Solution
: Power radiated by the antenna is proportional to (λ1)2. When both the length of the antenna l and wavelength of the signal λare doubled, the power radiated by the antenna remains constant