Microstrip is the name given to a type of open wave guide structure which is now commonly used in present day electronics not only as transmission lines but for circuit components such as filters, couplers, resonators etc. They have some well-known advantages such as small size, lightweight, low profile and low cost.This work had a broader scope of analysis, design, fabrication, testing and implementation of aperture coupled microstrip patch antenna array with omni-directional pattern. An aperture coupled microstrip antenna used aperture coupling and does not require a direct connection between the patch and the feed line. A small aperture in the ground plane located under the patch allows coupling from the feed line.The feed network requirement for the array to the required amplitude distributions has been addressed. Typically, these arrays of microstrip antennas are used to reduce overall ripple in the roll pattern of the antenna. This entire project has been carried out in LRDE, DRDO, Bangalore.