In which of the following scanning the phase of the radiators varies incrementally for scan?(a) Phase scanning(b) Frequency scanning(c) IF scanning(d) Beam formingThe question was posed to me in examination.Origin of the question is Phased Array in portion Phased, Adaptive and Binomial Arrays of Antennas

In which of the following scanning the phase of the radiators varies i

1.	In which of the following scanning the phase of the radiators varies incrementally for scan?(a) Phase scanning(b) Frequency scanning(c) IF scanning(d) Beam formingThe question was posed to me in examination.Origin of the question is Phased Array in portion Phased, Adaptive and Binomial Arrays of Antennas
Answer» The correct answer is (a) Phase scanning To EXPLAIN I would SAY: In PHASED array radar a single radiator is used to feed antenna with different phase shifts and thus the desired beam width is obtained. In phase scanning the phase shifters are used and radiators have different phases. The incremental phase shift of the phase array radar with d element spacing and scan ANGLE θ is given by \(ᴪ=\frac{2π}{λ} dsinθ. \)

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