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Antenna & Wave PropagationDipole Antennas

The directivity of a half-wave dipole is approximately?

  • A1 or 0 dBi
  • B1.64 or 2.15 dBi
  • C3.28 or 5.16 dBi
  • D10 or 10 dBi
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Correct Answer: B. 1.64 or 2.15 dBi
Explanation: A half-wave dipole has maximum directivity about 1.64, corresponding to approximately 2.15 dBi.
Reference: Standard antenna and wave propagation: dipole antennas
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