Question Pool -- Category E9A
How can the approximate beamwidth of a beam antenna be determined?
-
A.
- Note the two points where the signal strength of the antenna is
down 3 dB from the maximum signal point and compute the angular
difference
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B.
- Measure the ratio of the signal strengths of the radiated power
lobes from the front and rear of the antenna
-
C.
- Draw two imaginary lines through the ends of the elements and
measure the angle between the lines
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D.
- Measure the ratio of the signal strengths of the radiated power
lobes from the front and side of the antenna
Answer is A.
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