What is the beam width for a half wave dipole antenna?(a) 90°(b) 180°(c) 50°(d) 250°I have been asked this question by my college director while I was bunking the class.This intriguing question originated from Types of Antenna topic in chapter Antennas and Wave Propagation of Avionics

What is the beam width for a half wave dipole antenna?(a) 90°(b) 180�

1.	What is the beam width for a half wave dipole antenna?(a) 90°(b) 180°(c) 50°(d) 250°I have been asked this question by my college director while I was bunking the class.This intriguing question originated from Types of Antenna topic in chapter Antennas and Wave Propagation of Avionics
Answer» Correct option is (a) 90° For explanation I would SAY: The beam width is measured between the points on the radiation curve that are 3 dB down from the maximum AMPLITUDE of the curve. The maximum amplitude of the PATTERN occurs at 0° and 180°. The 3-dB down points are 70.7 percent of the maximum. The angle FORMED with two lines extending from the CENTER of the curve to these 3-dB points is the beam width. The beam width is 90°. The smaller the beam width angle, the more directional the antenna.

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