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Antenna & Wave PropagationAntenna Pattern Parameters

An antenna radiates 100 times as much power density in its forward direction as in its backward direction. Its front-to-back ratio is?

  • A10 dB
  • B20 dB
  • C40 dB
  • D100 dB
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Correct Answer: B. 20 dB
Explanation: For a power ratio, F/B(dB)=10log10(100)=20 dB.
Reference: Standard antenna and wave propagation: antenna pattern parameters
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