📄 sa_fig3_6.m
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% Smart Antennas figure 3.6 plotting array factor in rectangular and polar coordinates.
set(0,'defaultfigurecolor','w')
N=12;
d=.25;
th=-pi/2:.01:pi/2;
an=th*180/pi;
AF2=abs(sin(N*pi*d*sin(th))./(N*sin(pi*d*sin(th))));
AF1=abs(sin(N*pi*d*sin(th))./(N*(pi*d*sin(th))));
figure;plot(an,AF1,'k')
xlabel('\theta')
ylabel('Field Pattern')
axis([-90 90 0 1])
grid on
figure;polar(th,AF1,'k')
view(90,-90)
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