sa_fig4_24.m

这个是英文版<<Smart Antennas for Wireless Communications>>配套的matlab源程序

% Smart Antennas  figure4.24  plotting elevation plane pattern

a=1;
N=10;
pinc=2*pi/N;
th=-pi/2:.01:pi/2;
th0=pi/6;
ph0=0;
AF=zeros(1,length(th));
for n=1:N
    AF=AF+exp(-1j*2*pi*a*(sin(th)*cos(ph0-(n-1)*pinc)-sin(th0)*cos(ph0-(n-1)*pinc)));
end
maxx=max(AF);
figure;
plot(th*180/pi,abs(AF)/maxx,'k')
axis([-90 90 0 1])
xlabel('\theta')
ylabel('AF')
title('Circular Array of N=10 elements, a=1\lambda')
 set(gca,'xTick',[-90:30:90])