First Rf Corporation

Anthony J Jensen

P Keith Kelly

An integrated antenna system includes a first patch, a second patch, and internal patches comprising electrically conductive material. Each of these patches has a radiator sub-patch and a feed-network sub-patch. The radiator sub-patches of the internal patches are located between the radiator sub-patches of the first and second patches to form an array of tapered-slot antenna elements. The radiator sub-patch of each internal patch tightly couples a neighboring pair of the antenna elements. The first patch, second patch, and internal patches are electrically isolated from each other. The feed-network sub-patches of the first and second patches are positioned to form an initial gap and cooperate with the initial gap to create a transmission line. The feed-network sub-patches of the first patch, second patch, and internal patches further form a corporate feed network that is fed by the transmission line and feeds the array of tapered-slot antenna elements.

Integrated antenna system with corporate feed network and antenna array

An antenna includes two radiators that are co-planar and exhibit mirror symmetry about an axis. Each radiator includes a half-Vivaldi sub-radiator bounded by a first curved edge and a first straight edge adjacent to the first curved edge. Each radiator also includes a curved monopole sub-radiator that is bounded by a second curved edge and a second straight edge adjacent to the second curved edge. The first and second straight edges coincide such that the first and second curved edges are continuous. When the antenna is driven at relatively high frequencies, the half-Vivaldi sub-radiators cooperate to act like a planar Vivaldi antenna. At lower frequencies, the curved monopole sub-radiators cooperate to act like a planar dipole antenna. Two of these antennas may be fabricated on circuit boards that intersect to form a dual-polarization antenna system.

Broadband antenna structure and associated devices

The invention is directed to a dual-frequency stacked patch antenna. In one embodiment, the antenna comprises a pair of electrically conductive, nested, tub-like structures and a feed surface. The edges of the tub-like structures and the feed surface define a surface that is adapted to be conformal to an application surface that defines a cavity in which the antenna is positioned. The edges of the tub-like structures and the edge of the feed surface define a pair of slots for receiving and/or transmitting two signals with different center frequencies. Located and extending throughout each of the slots is a slot modification structure comprised of inter-digitated fingers that provide capacitive loading and enhance the low observability of the antenna.

Growing community of inventors

Thornton, CO, United States of America

Anthony J Jensen