microstrip array design

Dear friends
I want to design a microstrip array antenna with difference pattern and 28dBi
Is there any useful reference for this work? especially on difference pattern.
thanks.

U can go through the book ANtenna Theoy and Design by Robert Elliott
May be that can help u out
Just see teh array designing chapter over there

this may help u.


https://www.edaboard.com/viewtopic.php?p=304008#304008

Added after 1 minutes:

this may help u.


http://www.ladyada.net/techproj/fres...microstrip.pdf

Dear sir,

the uploaded ebook is geed for microstrip antenna design.
Enjoy it.

Design of Nonplanar Microstrip Antennas

for difference beam look at
h**p://web.tiscali.it/antenna_software/index.html