design a matching networks for microstrip antenna arrays

Hi to all,
i have designed microstrip patch antenna array with corporate feed network, my problem is to design a matching network in between them so that it provides good return loss, i have tried in many ways, but not getting good results.
please provide me some information regarding this.
thank you

1) Use Transmission Line model of microstrip patch antenna to find input impedance (Zin)
2) Use Quarter wave length transformer to reduce the impedance
3) Use T or Y power divider to spit the power. Transform impedance if necessary.