Scan Error Studies in a Tightly Coupled Dipole Array Due to Strong Mutual Coupling

This paper describes the studies on the scan performance of a tightly coupled dipole array (TCDA) using method of moments (MoM) using FEKO software. A TCDA's unit cell is modelled and simulated over a wide scan volume in an infinite array environment. The study focusses upon the low angle scanning performance of TCDA. It is observed that at lower scan angles different scattering modes and common mode resonances occurs resulting into a scan error. This study presents their effect and few important considerations while modeling TCDAs for wide scan performance.