Expression for aperture efficiency in terms of physical aperture Ae and effective aperture Aem is ____
(a) \(\frac{A_e}{A_{em}}\)
(b) \(\frac{A_{em}}{A_e}\)
(c) \(\frac{A_e+A_{em}}{A_e-A_{em}}\)
(d) \(\frac{A_e-A_{em}}{A_e+A_{em}}\)
This question was addressed to me in an interview for internship.
The query is from Effective Aperture topic in division Antenna Parameters of Antennas