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If the progressive shift in antenna array is equal to zero then it is called _________

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If the progressive shift in antenna array is equal to zero then it is called _________

(a) Broad side

(b) End-fire

(c) Yagi-uda

(d) Fishbone antenna

This question was posed to me in my homework.

My doubt stems from Introduction topic in section Antenna Array of Antennas

1 Answer

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Best answer
The correct choice is (a) Broad side

Easy explanation: The total phase difference of the fields is given by Ѱ=kdcosθ+β

Here β is the progressive phase shift

⇨ β=0, array is a uniform broadside array

⇨ β=180, array is a uniform end-fire array

Yagi-uda antenna, fishbone antenna are end-fire antenna array.

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