how to design antenna using dual feed rectangular patch

Haii anyone.
I need help u plea
I was design antenna microstrip rectangular patch with frequency 2,4 GHz
and i want design antennas using dual feed rectangular patch antenna.
and i dont know how to do ii design.
please help me to design b'coz this is my final project.
Anyone can help me?
Thank before anyone.

hi
u can see some type of dis antenna in hand book of microstrip by James and see the reference

hi ferdows... thx b4.
i have that book.
but the book did not explain about how to make a dual feed in hfss software.
please help me ferdows.
I try to design use a dual antenna design feeds. but still an error on his part waveport.
can you help me?

hi send me that file ferdows_j@yahoo.com

oke ferdows.
i've sent email to u.
thanx before :)