sai=0:.01:2*pi;
af_4=(sin(4.*sai./2))./(sin(sai./2))./4;
af_8=(sin(8.*sai./2))./(sin(sai./2))./8;
af_16=(sin(16.*sai./2))./(sin(sai./2))./16;
af_32=(sin(32.*sai./2))./(sin(sai./2))./32;
plot(sai,af_4,'b',sai,af_8,'y',sai,af_16,'r',sai,af_32,'k')
title('RADIATION PATERN FOR DIFFERENT VALUES OF ARRAY ELEMENTS(N)')
xlabel('\Psi');
ylabel('Amplitude');
grid on
h = legend('N=4','N=8','N=16','N=32',1);
set(h,'Interpreter','none');
clc
disp('HERE IS THE COMPARISION OF ANTENNA ARRAYS FOR 4 , 8 , 16 , 32 ');
disp(' ANTENNA ELEMANTS WITH SAME CURRENT INPUT ');
disp(' ');
disp(' ');
disp(' ');
disp(' ');
disp(' ');
disp(' ');
  disp('THIS PROGRAM IS SUBMITTED BY- ');
  disp('                               ANUJ KUMAR TRIPATHI');
  
  disp('                            ELECTRONICS & COMMUNICATION    ');
    disp('                        THAPAR INSTITUTE OF ENGG. AND TECH.  ');