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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 dBI 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

Answer»

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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