1- i- A 3-element uniform linear array with inter-element spacing of /2 is opera

Question

1-

i- A 3-element uniform linear array with inter-element spacing of /2 is operated as a broadside array ,find the directions of null radiation , find the direction and the relative level of the side lobe .

ii- if the peak radiation is to rotate by 30 degrees off the broadside direction , what should be the current phasing ?

iii- design a non-uniform linear array to have the pattern :

E = [(sin(3/2))/(sin(/2))]2

where =cos , and is measured from the array line , namely find the number of elements , the element spacing , and the current amplitudes , also what is the relative side lobe level ?

Explanation / Answer

http://www.acfr.usyd.edu.au/pdfs/training/sensorSystems/09Lec%20-%20High%20Angular%20Resolution.pdf

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