You can refer to the example code below which concatenates the temp array for 10 times. The parameters can be tuned for your use case accordingly.
N = 10; % Times to repeat
L = 3; % Size of the array which needs to be repeated
EL = zeros(1,N*3); % Prellocation for performance
temp = [1,2,3]; % Array which needs to be repeated
for i = 1:L:L*N
EL(i:i+L-1) = temp;
end
