Question

What is the HPBW of the Dolph Chebyshev array if the broadening factor is 2 and HPBW of uniform array is 30°?

(a) 30°

(b) 60°

(c) 90°

(d) 120°

I had been asked this question during an interview for a job.

I want to ask this question from Adaptive Array topic in section Phased, Adaptive and Binomial Arrays of Antennas

Answer 1

The correct option is (b) 60°

Easiest explanation: HPBW of the Dolph Chebyshev array= broadening factor×HPBW of uniform array

=2×30°=60°.