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InterviewSolution
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What is the effective aperture of a Half-wave dipole operating at 100MHz?(a) 1.07m^2(b) 1.17m^2(c) 1.27m^2(d) 1.77m^2The question was asked in examination.The above asked question is from Effective Aperture topic in portion Antenna Parameters of Antennas |
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Answer» RIGHT option is (B) 1.17m^2 The best explanation: The DIRECTIVITY of half-wave dipole is 1.64 The effective APERTURE of half-wave dipole is \(A_e=1.64\FRAC{\lambda^2}{4\pi}\) \(\lambda=\frac{c}{f}=\frac{3×10^8}{100×10^6}=3m\) \(A_e=1.64 \frac{\lambda^2}{4\pi} = 1.64 \frac{3^2}{4\pi}\)=1.17m^2. |
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