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Power radiated by a half wave dipole is how many times the power radiated by a quarter wave monopole under same input current to antennas?(a) 2(b) 3(c) 4(d) 1I have been asked this question during an internship interview.Origin of the question is Power Radiation from Half Wave Dipole topic in portion Antenna Parameters – II of Antennas

Answer»

Right CHOICE is (a) 2

The best I can EXPLAIN: Average Power radiated from the half-wave dipole \(P_{AVG-hlf}=I_{rms}^2 R_{hlf}\)

⇨ \(\frac{P_{avg-hlf}}{P_{avg\, mono}} = \frac{R_{hlf}}{R_{mono}} = \frac{73}{36.5}=2\) (under same CURRENT)



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