ANALYSIS OF FINITE-PHASED ARRAYS OF APERTURE-COUPLED STACKED MICROSTRIP ANTENNAS

In this paper, analytical results for finite-phased arrays of aperture -coupled stacked microstrip antennas are presented. In order to evalua te the characteristics of aperture-coupled microstrip antennas in a fi nite array and derive the moment-method solutions for the unknown curr ent distributions on the patches and slots, the reciprocity theorem an d the spectral domain Green's functions for a dielectric slab are used . Various sized arrays are considered and compared with solutions far an infinite array. Numerical results are presented to illustrate the i nput impedance, mutual coupling, active reflection coefficient versus scan angle, radiation efficiency, and active-element gain patterns.