Patent ID: 7061443

Claim:
A millimeter wave (MMW) antenna array, comprising: a continuous transverse stub (CTS) radiating aperture comprising a set of spaced continuous transverse stubs, each having a longitudinal extent, wherein said radiating aperture comprises a waveguide structure comprising an upper conductive plate structure defining the set of continuous transverse stubs and a lower conductive plate structure disposed in a spaced relationship relative to the upper plate structure; an excitation source for providing excitation signals in a MMW frequency range; a feed system coupled to the excitation source for exciting the stubs with MMW electromagnetic energy having a linear phase progression along the longitudinal extent of the stubs to produce an array beam which is scanned over a beam scan range by changing the frequency of the excitation source, wherein the feed system includes a sinuous feed network coupled to a plurality of feed elements to provide a linear progressive phase shift in the electromagnetic wave along the feed source.