matlab assginment about antenna arrays

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donalddrug666

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dipole antenna array

hey can anyone help me please iam doing a matlab assginment about antenna arrays and what i wrote so far is
N=8;
t=-2*pi:0.001:2*pi;
l=1;
d=l/2;
b=2*pi/l;
Y=b*d*cos(t);
A=(sin(N*(Y/2))./(N*sin(Y/2)));
plot(t,A);
polar(t,A);
and it works
but i need some one who can help me in 3D part i cant find it
so please HELP!!
 

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