How to save data in excel as one sheet?

Hello, I save my data in sheet by sheet and every sheet has three data set. I want to save all data in one sheet. How can I do that? This is my code.

if saveLS==1
sizeA=size(A);
   save_name=[save_path,materail,'_',f,'LS','.xls'];
for w=1:sizeH2(2)
d={'A','B','C'};
    xlswrite(save_name,d,w,'A1')
    xlswrite(save_name,A(:,w),w, 'A2');
    xlswrite(save_name,B(:,w),w, 'B2');
    xlswrite(save_name,C(:,w),w, 'C2');
end
end