title: Phased array element shapes for suppressing grating lobes.
abstract: Most techniques for suppressing grating lobes in phased arrays while relaxing the interelement spacing requirement involve redistributing array elements in sparse aperiodic patterns, or varying the transmit-receive beam patterns. An alternative is presented which uses oversized array elements to eliminate grating lobes as a direct consequence of the element shape. It is shown that by using carefully shaped, overlapping elements, maximum scan angle can be exchanged for a reduced interelement spacing requirement.
authors.affiliation: Massachusetts Institute of Technology, Cambridge 02139, USA. pompei@media.mit.edu
authors.forename: F Joseph
authors.initials: FJ
authors.lastname: Pompei
authors.forename: Shi-Chang
authors.initials: SC
authors.lastname: Wooh
mesh_terms: D008962:Models, Theoretical; D013016:Sound