radiation pattern of misrostrip antenna

sir im doin my final year b.tech ,making microstrip antenna as my project n i want ur help for the same.
how can i get its radiation pattern equations and its derivation.
please provide me help for the same.

Hi,

try http://www.ece.rutgers.edu/~orfanidi/ewa/ - ch 18

or good book is

http://www.amazon.com/Antenna-Theory.../dp/0471592684