JFET_V2_N2_RP6 Dr. Mikhled Alfaouri Dr. Hussein A. Abdulkadir Yasser H. Naif Journal on Future Engineering and Technology 2230 – 7184 2 2 81 86 Array Antenna, Computer Modeling, Field Pattern This paper presents a simple novel technique, where the formulation for radiation characteristic of an array antenna is carried out and plotted using a simplified computer simulation modeling of the field pattern. The pattern of an array antenna can be designed and directed by controlling the spacing between the array elements and the excitation phase difference. The proposed algorithm plots the field pattern of the array antenna in polar and rectangular coordinates under different operating conditions. Typical field patterns are obtained in which the array antenna has a maximum radiation in certain direction and minimum radiation (nearly null) in the other directions. This simple technique is also capable of determining the field pattern for different types of array antennas with sidelob cancellation. November 2006 - January 2007 Copyright © 2007 i-manager publications. All rights reserved. i-manager Publications http://www.imanagerpublications.com/Article.aspx?ArticleId=892