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What is the effective aperture of Hertzian dipole antenna operating at frequency 100 MHz?(a) 1.07m^2(b) 0.17m^2(c) 1.7m^2(d) 1.2m^2I had been asked this question during an internship interview.I need to ask this question from Effective Aperture in division Antenna Parameters of Antennas

Answer»

Correct OPTION is (a) 1.07m^2

To ELABORATE: Effective aperture for a Hertzian dipole is given by \(A_e=1.5\FRAC{\lambda^2}{4\pi} \)

Gain of Hertzian dipole is 1.5

\(\lambda=\frac{C}{F}=\frac{3×10^8}{100×10^6}=3m\)

\(A_e=1.5 \frac{\lambda^2}{4\pi} =1.5\frac{3^2}{4\pi} =1.07m^2\)


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