Which of the following statement is true?(a) Lens array has different input and output radiators while same radiator is used for reflector array(b) There is no surface matching required for the lens array(c) In lens and reflect array same radiator is used for input and output(d) Lens and reflect array belong to constrained feed systemsThis question was posed to me in my homework.My query is from Phased Array in section Phased, Adaptive and Binomial Arrays of Antennas

Which of the following statement is true?(a) Lens array has different

1.	Which of the following statement is true?(a) Lens array has different input and output radiators while same radiator is used for reflector array(b) There is no surface matching required for the lens array(c) In lens and reflect array same radiator is used for input and output(d) Lens and reflect array belong to constrained feed systemsThis question was posed to me in my homework.My query is from Phased Array in section Phased, Adaptive and Binomial Arrays of Antennas
Answer» The correct answer is (a) Lens ARRAY has different input and output radiators while same radiator is used for reflector array To elaborate: In Lens array, different input and output radiators are used and hence there TWO surface matching is required. In reflect array the same radiator is used to radiate and collect.Phased array with lens or reflector arrays COMES under the optical feed SYSTEM.

Discussion

No Comment Found

Related InterviewSolutions

Which of the following can be the excitation amplitude of binomial array with 4 elements?(a) 1 3 3 1(b) 1 2 3 1(c) 2 1 1 2(d) 1 4 6 4 1I got this question in a job interview.My question comes from Binomial Array in section Phased, Adaptive and Binomial Arrays of Antennas
Binomial array has high HPBW compared to Dolph-chebychev.(a) True(b) FalseThe question was posed to me in quiz.This is a very interesting question from Binomial Array topic in portion Phased, Adaptive and Binomial Arrays of Antennas
Which of the following represents the chebyshev recursive formula?(a) Tm(z) = 2zTm-1(z) – Tm-2(z)(b) Tm(z) = zTm-1(z) – 2Tm-2(z)(c) Tm(z) = 2Tm-1(z) – zTm-2(z)(d) Tm(z) = Tm-1(z) – 2zTm-2(z)The question was posed to me in an online interview.This intriguing question originated from Adaptive Array topic in section Phased, Adaptive and Binomial Arrays of Antennas
What should be the side lobe level to make Dolph Chebyshev to binomial array?(a) -∞ dB(b) 0 dB(c) 1 dB(d) 10dBThe question was posed to me in quiz.My query is from Adaptive Array in division Phased, Adaptive and Binomial Arrays of Antennas
All the nulls occur at (-1, 1) in the Chebyshev polynomial.(a) True(b) FalseI have been asked this question during an online interview.I'm obligated to ask this question of Adaptive Array in section Phased, Adaptive and Binomial Arrays of Antennas
As the order of the polynomial increases, the slope becomes steeper.(a) True(b) FalseThis question was addressed to me in a job interview.Asked question is from Adaptive Array topic in chapter Phased, Adaptive and Binomial Arrays of Antennas
The condition for the existence of the main lobe according to the Chebyshev is _________(a) |x| > 1(b) |x| < 1(c) |x| = 0(d) 2|x| > 1I had been asked this question during an online exam.My question is based upon Adaptive Array in portion Phased, Adaptive and Binomial Arrays of Antennas
Which of the following properties of Chebyshev polynomial is false?(a) The minor lobes have unequal amplitudes(b) The polynomial Tm(x) is symmetric for m = even(c) The polynomial Tm(x) crosses the x axis m times between -1 and 1(d) Minor lobes exists for |x| < 1I had been asked this question during an interview.The doubt is from Adaptive Array in chapter Phased, Adaptive and Binomial Arrays of Antennas
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 arrayI 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
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

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment