Relation between gain and effective aperture is given by ______(a) G=(4πAe)/λ^2(b) G=(4π λ^2)/Ae(c) G=4πAe(d) G=Ae/λ^2I got this question in an internship interview.My query is from Free Space Propagation Model topic in chapter Mobile Radio Propagation: Large – Scale Path Loss of Wireless/Mobile

Relation between gain and effective aperture is given by ______(a) G=(

1.	Relation between gain and effective aperture is given by ______(a) G=(4πAe)/λ^2(b) G=(4π λ^2)/Ae(c) G=4πAe(d) G=Ae/λ^2I got this question in an internship interview.My query is from Free Space Propagation Model topic in chapter Mobile Radio Propagation: Large – Scale Path Loss of Wireless/Mobile
Answer» The correct choice is (a) G=(4πAe)/λ^2 Easy explanation: The GAIN of the antenna is PROPORTIONAL to effective APERTURE area. Therefore, antennas with large effective apertures are high gain antennas and have small ANGULAR beam widths. Most of their power is radiated in a narrow beam in one DIRECTION, and little in other directions.

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