How to calculate VSWR and Broadside gain of the stacked patch antenna

I am doing project on design problem in stacked patch antenna... for that i want to calculate broadside gain and VSWR of the stacked patch antenna... Plz ans me with matlab program... and tell about stacked patch antenna or tell the good reference book or link for stacked patch antenna...

Thanks..

http://diglib.uni-magdeburg.de/Disse...bdelrahman.pdf
http://www.gyte.edu.tr/dosya/102/~sa...%20v.1.3.4.pdf
Computational Electromagnetics and Antennas Research Lab - Genetically Engineered Antennas
http://vtb.engr.sc.edu/vtbwebsite/do...ns/425-085.pdf

---------- Post added at 12:07 ---------- Previous post was at 11:59 ----------

matlab design

http://sst.unisim.edu.sg:8080/dspace...ong_Daniel.pdf
http://rze-falbala.rz.e-technik.fh-k...0LabManual.pdf

Thank u sir can u tell, VSWR of the stacked patch antenna using Particle swarm optimization and Covariance Matrix Adaptation Evolutiary Strategy? Plz sir