USA As Represented by Secretary of the Navy

Rickie W Kindt

Mark G Parent

Gregory C Tavik

Mark Kragalott

An ultra-wideband antenna array architecture includes a first array of radiating elements, a second array of radiating elements, and a third array of radiating elements, with their respective element widths proportionately ascending in size. In one configuration, the first array radiating element width is half a wavelength at the highest frequency of operation, the second array element width is twice the first width, and the third array element width is twice the second width. The first, second, and third arrays are positioned in a wavelength-scaled lattice wherein the wavelength scaling is based on design operative frequencies and whereby adjacent actively-radiating elements for an operative frequency are aligned so as to produce constructive interference when powered up. Feed means such as a diplexer with a selected-band frequency control then provides power to each array.

Wavelength-scaled ultra-wideband antenna array

An antenna element for fabricating into a linear or planar array includes a tapered slot along a main axis of the antenna element body that extends from a first slot end, defined by an outwardly flared opening at a second end of the antenna element, into a second meandering portion that is offset from the main axis, and then into a second slot end having a bend with respect to the main axis, and finally into a slot-line cavity proximate to the first end of the antenna element body. A feed port extends into the antenna element body from the outer surface of the first end of the antenna element body into the second slot end bend adjacent the slot-line cavity.

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Arlington, VA, United States of America

Rickie W Kindt