Help in adding a Phase Shift

Dear all,

I hope this finds you well.

I have the following code which is supposed to be an example of phased array antennas, but I am struggling to add a PHASE SHIFT of 10 degrees between each antenna.

Would anyone be kind in guiding me on how to introduce a phase shift to this code please?

Thank you.

clc;  clear;
c      = 3*10^8;               % Speed of light
f      = 60*10^9;              % Frequency of operation
lambda = c/f;                  % Wavelength
d      = 0.5*lambda;
pow    = 2*pi/lambda;
num_elements = 4;              % Number of elements
j      = sqrt(-1);
k      = 1;
ang    = 0:5:360;
ang_n  = max(size(ang));
A      = 1;                    % Omni-pattern

for i = 1 : ang_n
    y = 0;
    for nn = 0 : num_elements - 1
        y = y + A*exp(-j*pow*cos(ang(i)*pi/180)*d*nn);
    end;
    Amp(k) = abs(y);
    k = k + 1;
end;

plot(ang,Amp/max(Amp))

[Harout Katerjian]

did you find any solution for your problem, because i want also to implement a phased array beamforming with phase shift for each element antenna to give me the specific direction of the beamforing.