Electronics and Communication Engineering - Microwave Communication - Discussion
Discussion Forum : Microwave Communication - Section 2 (Q.No. 20)
20.
The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about
Answer: Option
Explanation:
Beam width between nulls of a parabolic antenna 
. Therefore 50° is the nearest value.
Discussion:
2 comments Page 1 of 1.
PAVANKUMAR said:
6 years ago
The beam width of parabolic antenna = 2(70λ)/D.
SO, 21*2=42 approx to 50°
SO, 21*2=42 approx to 50°
Joydeb said:
7 years ago
According to me, (70*3*10^8)/(1e9*1) = 21 °
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