Authors in LaTeX!

To produce

write this code just below the title

\author{ \textbf{Syed Ahsaan Rizvi \& Muhammad Ali Khalid} \\ \small Electrical Engineering Department, Military College of Signals\\ \small National University of Sciences and Technology (NUST), Pakistan}

For authors with different affiliations, check this link
http://fourlovesfour.blogspot.com/2009/10/latex-tip-author-affiliations.html