Hello
try finding the book "Microstrip Antenna Design Handbook" by Ramesh Garg. It is a good book and will give a good idea about how to design a patch antenna.
Raza
MIMO(Multiple Input Multiple Output) is a space diversity technique used to to increase the signal strength. This technique is widely used in 3G and WiMAX, and is going to be the technology for future communications.
I hope you know something about microstrip patch antennas, and the sierpinski...