Question

Which of the following array is used to synthesize pattern without side lobes?

(a) Binomial array

(b) Linear array

(c) End-fire array

(d) Chebyshev array

I had been asked this question during an online interview.

This intriguing question originated from Binomial Array topic in chapter Phased, Adaptive and Binomial Arrays of Antennas

Answer 1

Correct option is (a) Binomial array

For explanation: Binomial array is used to synthesize patterns without side lobes. In Chebyshev there are side-lobes present below the major beam level. The excitation amplitudes of the binomial array follow a Pascal’s triangle.