Antennas Questions and Answers – Adaptive Array – Chebyshev Arrays

«
»

This set of Antennas Multiple Choice Questions & Answers (MCQs) focuses on “Adaptive Array – Chebyshev Arrays”.

1. Which of the following is the key feature of the Chebyshev array?
a) Have constant side lobes and elements are placed uniformly
b) Have varying side lobes and elements are placed uniformly
c) Minor lobes are present at |x| > 1
d) Major lobes are present at |x| < 1
View Answer

Answer: a
Explanation: Chebyshev array exhibits the properties of the Chebyshev polynomial having constant amplitude 1-≤x≤1. Minor lobes are present at |x| < 1 andMajor lobes are present at |x| > 1.

2. In Chebyshev array, its array factor is approximated to Chebyshev polynomial.
a) True
b) False
View Answer

Answer: a
Explanation: One of the properties exhibited by the Chebyshev array is having a constant amplitude range of 1-≤x≤1. Its array factor is approximated to Chebyshev polynomial. This array has constant side lobes and elements are placed uniformly.

3. _____________ is used to obtain array with any desired side lobe level.
a) Chebyshev
b) Schelkunoff
c) Woodward-Lawson
d) Binomial
View Answer

Answer: a
Explanation: Chebyshev technique is used to obtain array with any desired side lobe level. In Schelkunoff method, pattern is produced with null in specified directions. Woodward method is suited for beam shaping. Binomial array is used when no side lobes are desired.
Note: Join free Sanfoundry classes at Telegram or Youtube
advertisement
advertisement

Sanfoundry Global Education & Learning Series – Antennas.

To practice all areas of Antennas, here is complete set of 1000+ Multiple Choice Questions and Answers.

Take Antennas Mock Tests - Chapterwise!
Start the Test Now: Chapter 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

advertisement
advertisement

Leave a Comment

Subscribe to our Newsletters (Subject-wise). Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Join our social networks below and stay updated with latest contests, videos, internships and jobs!

Youtube | Telegram | LinkedIn | Instagram | Facebook | Twitter | Pinterest
Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

Subscribe to his free Masterclasses at Youtube & technical discussions at Telegram SanfoundryClasses.