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If the antenna dimension is two times the wavelength of the signal then the half power beam width will be _____

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If the antenna dimension is two times the wavelength of the signal then the half power beam width will be _____

(a) 35

(b) 140

(c) 70

(d) 280

This question was addressed to me in semester exam.

Query is from Aperture Antenna topic in chapter Aperture Antenna of Antennas

1 Answer

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Best answer
Right option is (a) 35

To explain I would say: The half-power beamwidth is given by70λ/D.

⇨ \(\frac{70\lambda}{D}=\frac{70}{2}=35.\)

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