Lockheed Martin Corporation

Richard D Breen, Jr

Frank Chethik

Samuel J Waldbaum

Aspects of the disclosure provide an antenna array system. The antenna array system includes a plurality of antenna elements and phase-shift switching circuitry. The plurality of antenna elements are organized in an array and configured to form a non-planar shaped antenna array surface. Each of the plurality of antenna elements is switchable to one of a plurality of phase shift states. The phase-shift switching circuitry is configured to switch each of the plurality of antenna elements to one of the plurality of phase shift states based on phase control signals. In an example, the phase-shift switching circuitry switches a first set of antenna elements to a first phase shift state and switches at least a second set of antenna elements to a second phase shift state to steer an antenna beam in a direction.

Conformal array antenna

Disclosed are waveguide distortion mitigation devices that produce reduced group delay ripple in communication systems in which they are used. The devices comprise a first and second tapered waveguide sections, a first coupling device coupled to the first tapered waveguide section, and a second coupling device coupled to the second tapered waveguide section and the first waveguide coupling device. A waveguide isolator may optionally be coupled between the first and second waveguide coupling devices. The first and second coupling devices may comprise waveguide circulators or waveguide-hybrid couplers. The tapered waveguide sections may embody a single transition comprising a single waveguide wall, a single transition comprising two waveguide walls, or a plurality of transitions comprising a plurality of waveguide walls.

Waveguide distortion mitigation devices with reduced group delay ripple

An antenna array system comprising a plurality of antenna elements organized in an array and configured to form a non-planar shaped antenna array surface. The antenna array system further comprises switching circuitry configured to switch each of the plurality of antenna elements on or off based on control signals. In one embodiment, the antenna array system is configured such that the antenna beam direction can be steered in a first direction by switching on a first set of antenna elements, and the antenna beam direction can be steered in a second direction by switching on a second set of antenna elements. In one embodiment, the second set of antenna elements can include one or more antenna elements from the first set of antenna elements, or the second set of antenna elements may not include any antenna elements from the first set.

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Fremont, CA, United States of America

Richard D Breen, Jr