What will be the array factor in polynomial form for the 3 element binomial array if Z=e^(-iᴪ)?(a) 1+2z+z^2(b) 1+3z+3z^2+z^3(c) 1+2z+3z^2+z^3(d) 1+3z+z^2I got this question in an interview for job.This key question is from Binomial Array in portion Phased, Adaptive and Binomial Arrays of Antennas

What will be the array factor in polynomial form for the 3 element bin

1.	What will be the array factor in polynomial form for the 3 element binomial array if Z=e^(-iᴪ)?(a) 1+2z+z^2(b) 1+3z+3z^2+z^3(c) 1+2z+3z^2+z^3(d) 1+3z+z^2I got this question in an interview for job.This key question is from Binomial Array in portion Phased, Adaptive and Binomial Arrays of Antennas
Answer» Correct choice is (a) 1+2z+z^2 To EXPLAIN I would say: The ARRAY factor AF = (1+z)^N-1and N is number of elements. AF = (1+z)^3-1 = (1+z)^2 = 1+2z+z^2 Binomial array follows the Pascal’s triangle coefficients

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What will be the array factor in polynomial form for the 3 element binomial array if Z=e^(-iᴪ)?(a) 1+2z+z^2(b) 1+3z+3z^2+z^3(c) 1+2z+3z^2+z^3(d) 1+3z+z^2I got this question in an interview for job.This key question is from Binomial Array in portion Phased, Adaptive and Binomial Arrays of Antennas

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