INFINITE ARRAY OF PRINTED DIPOLES INTEGRATED WITH A PRINTED STRIP GRATING FOR SUPPRESSION OF CROSS-POLAR RADIATION .1. RIGOROUS ANALYSIS

A rigorous analysis of an infinite array of printed dipoles integrated with a covering layer of printed strip grating is presented. Such des igns can be useful to achieve low to ultralow levels of cross-polar ra diation from printed antennas, which is otherwise difficult to obtain from standard printed antenna designs, The analysis rigorously account s for coupling between the grating strips and the dipole array in a ge neral multilayered environment. Various demonstrative and design resul ts showing loading effects of the grating on scan and impedance charac teristics of the array are presented, Some interesting fundamental eff ects of the grating on the cross-polarization level and scan-blindness behavior are discussed.