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ESE 2021 Technical Quiz 78 ||Antennas
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Question 1
Which one of the following antenna structures is best for generating a circularly polarized radiation?
Question 2
In a uniform linear array, four isotropic radiating elements are spaced /4 apart. The progressive phase shift between the elements required for forming the main beam at 60 ° of the end fire is:
Question 3
In broad side array 9 isotropic radiators are equally spaced at a distance of The beam width between first nulls will be approximately
Question 4
Which of the following antenna is used as a standard reference for calculating directive gain?
Question 5
An antenna has the directivity of 4. If it operates at 30 GHz frequency, the maximum value of effective aperture of this antenna will be
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Jun 7ESE & GATE EC