Find the effective area of a half-wave dipole operating at frequency 100MHz and directive gain 1.8?(a) 1.28m^2(b) 2.18m^2(c) 0.128m^2(d) 12.8m^2This question was addressed to me in an internship interview.This is a very interesting question from Antenna Characteristics in portion Antenna Parameters of Antennas

Find the effective area of a half-wave dipole operating at frequency 1

1.	Find the effective area of a half-wave dipole operating at frequency 100MHz and directive gain 1.8?(a) 1.28m^2(b) 2.18m^2(c) 0.128m^2(d) 12.8m^2This question was addressed to me in an internship interview.This is a very interesting question from Antenna Characteristics in portion Antenna Parameters of Antennas
Answer» The correct option is (a) 1.28m^2 The explanation: The effective AREA \(A_e=\FRAC{\lambda^2}{4π}D \) \(\lambda = \frac{C}{F}=3×\frac{10^8}{100×10^6}=3M\) \(A_e=\frac{3^2}{4π}×1.8=1.28m^2\)

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