design of rectangular array of patch antenna using ADS software

1)hey I designed a rectangular patch antenna of W= 29.34mm, L= 16.328mm, εr= 9.8, h(thickness)= 1.27mm, f0=2.2ghz... Im using a microstrip line feed of 50 ohm. I want to know what is the correct feeding point? how can i determine it? Is there a formula?
2)Wen i go for an array of antenna what should I do differently to feed them ?(2X2 array)

Hello Abprhe

There is an equation for inset point,if you would like to do inset feed or you can do impedance matching technique,look up the equations in" antenna theory by balanis" Equations are explained in detail.microstrip antennas.

There are many options for doing an array it depends whats your criteria.maybe a corporate feed.

Regards
Rotmanlens.

Regards