We consider design techniques for low-profile phased antenna arrays (PAA) with wideband wide-angle beam steering performance. Special attention is given to printed patch radiators, performed on suspended substrates with probe-fed or aperture-coupling excitation method. Another approach, based on application of cavity-backed patch resonators, for simultaneous bandwidth enhancement and mutual coupling reduction is considered. Additionally, we address the problem of substrate surface waves suppression by employment of low-elements EBG (electromagnetic band-gap) structures for some existing printed PAA element designs. The given design examples are illustrated by results of full-wave simulations inside Floquet channel, experimental results of measured PAA fragments of finite size are also presented. Finally, we dwell on some effective techniques, built on spectral-domain Galerkin’s method, for full-wave analysis of both reflective and active printed PAA elements. ​

515 room​​ (Birzhevaya line, 14​)