Lockheed Martin Corporation

Joseph M Torres

Thomas Henry Hand

Joshua David Gustafson

Thomas Patrick Cencich

Braiden T Olds

Adam Blair Hess

Erik Lier

Arun K Bhattacharyya

W Neill Kefauver

Aaron Christopher Rothlisberger

Konrad J Gojara

Roger Douglas Hasse

Scott Alan Lundgren

James Steven Harrison

Grayeme Everett Platt

Colton Brent Martin

Madison P Gast

Arun Kumar Bhattacharyya

Provided herein are various enhancements for antenna systems and directed radio frequency energy structures. In one example, an apparatus includes an antenna array comprising a plurality of Vivaldi antenna elements arranged about an axis perpendicular to a baseplate. Feed elements are coupled to each of the Vivaldi antenna elements through the baseplate. First alternating ones of the Vivaldi antenna elements are configured to transmit radio frequency (RF) energy at a first RF band, and second alternating ones of the Vivaldi antenna elements are configured to receive RF energy at a second RF band.

Vivaldi antenna structures with concurrent transmit and receive

Provided herein are various enhancements for antenna systems and directed radio frequency energy structures. In one example, an apparatus includes an antenna array comprising a plurality of antenna elements formed by waveguide structures embedded within a substrate and positioned about a longitudinal axis of the substrate to form at least two concentric ring arrangements of antenna elements. Apertures of the waveguide structures are configured to emit or receive radio frequency (RF) energy generally along the longitudinal axis. Feed elements are coupled to each of the waveguide structures on an end opposite of the apertures, and configured to couple the RF energy for the antenna array.

Waveguide antenna structures with concurrent transmit and receive

Enhanced components and assemblies for connector-less radio frequency (RF) interconnect systems are provided. One example includes two circuit boards each with a broadside coupling feature comprising a tapered circuit board trace having a terminal portion. The circuit boards are positioned in close proximity to establish a desired gap, and a dielectric material is positioned within the gap between circuit boards. The broadside coupling features of the circuit boards are then configured to convey RF signals over the gap without electrical contact.

Broadside coupled radio frequency interconnect

Aperture antenna structures with concurrent transmit and receive

An antenna element includes a radiator element, a plurality of feed circuits and a multiplexing interface. The radiator element can transceive radio-frequency (RF) signals. The feed circuits, which include impedance and multiplexing features, are realized on multiple feed locations of the radiating element feed slot. The multiplexing interface is electrically coupled to the plurality of feed circuits and can multiplex a number of sub-band signals associated with the feed circuits. The multiplexing interface can provide a high isolation between the feed circuits.

Multiplexed ultra-wideband radiating antenna element

Systems and methods are provided for wide scan phased array fed reflector systems using ring-focus optics to significantly improve the scan volume of such systems. The subject system includes a reflector having a focal plane and a parabolic curvature configured to receive electromagnetic radiation having a first gain and provide reflected electromagnetic radiation having a second gain greater than the first gain that collimates into a focal ring. The subject system includes a feed array having feed elements positioned about the focal ring, in which each feed element is configured to receive the reflected electromagnetic radiation from the reflector and collimate the reflected electromagnetic radiation into a scanned beam for scanning an annular region. In some aspects, the feed array is centered on the focal ring such that at least one feed element overlaps with the focal ring and remaining feed elements are non-overlapping with the focal ring.

Wide scan phased array fed reflector systems

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Littleton, CO, United States of America

Joseph M Torres