Topic: Electromagnetics
The gain G of an antenna of effective area A is given by
- A. G = 4*pi*lambda/A²
- B. G = 4*pi*A/lambda
- C. G = 4*pi*A/lambda²
- D. None
Answer: C. G = 4*pi*A/lambda²
Explanation: The relationship between the maximum gain (G) of an antenna and its effective aperture area (A) is given by the formula G = (4 * pi * A) / lambda², where lambda is the operating wavelength.