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What is the front to back ratio of a half wave dipole antenna?

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What is the front to back ratio of a half wave dipole antenna?

(a) 0 dB

(b) 10 dB

(c) 100 dB

(d) 50 dB

I had been asked this question during an interview for a job.

This interesting question is from Synchronous TDM topic in chapter Multiplexing & Sampling of Bandpass Signal of Analog Communications

1 Answer

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Correct option is (a) 0 dB

Easy explanation: The front to back ratio means the ratio of power gain between the front and back of a directional antenna. A half-wave dipolr antenna is one with length half of the wavelength. For a half-wave dipole antenna, its value comes out to be 0dB.

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