Raytheon Company

Keith C Smith

Steven L Kaufman

Carl O Jelinek

David J Fairfield

Fred Gallagher

Generally discussed herein are systems, devices, and methods for conflict resolution. A method can include identifying, by processing circuitry, whether a conflict exists between two or more nodes requesting access to a resource, in response to identifying a conflict exists, identifying a priority value for each of the nodes in conflict, the priority value for each of the nodes consistent with a probability distribution of possible priority values for each respective node, comparing the identified priority values to determine which priority value of the identified priority values corresponds to a highest priority value, and allocating access to the resource to the node corresponding to the determined highest priority value.

Systems and methods for resource contention resolution

The present invention concerns methods and apparatus for implementing a true-time-delay wideband digital beamformer. In true-time-delay wideband digital beamformers of the present invention, improved control over beam properties formed by the combination of the beamformer and a multi-element antenna coupled to the beamformer is achieved through finer control of delays imparted to data signals. In beamformers of the present invention, data is delayed using a coarse control that provides a delay in whole increments of a clock cycle of a digital clock reference and a fine control that provides a delay corresponding to a fraction of a whole clock cycle of the digital clock reference. In the true time delay method of the present invention, transmission and reception across a wide frequency band is accommodated. In the true time delay method of the present invention, multiple simultaneous beams are formed independently, beam-to-beam, across a wide frequency band.

Methods and apparatus for implementing a wideband digital beamforming network

An improved dual polarized antenna element for use in planar array antennas. The antenna element includes a conductive sheet having a forwardly positioned notch and a pair of spaced rearwardly extending slot portions formed therein. The notch is adapted for coupling radio frequency energy between free space and the antenna element and the pair of slot portions are electrically coupled to the notch. A power divider/combiner is provided and is preferably interconnected with a power combiner/divider through branches of equal phase length. With this arrangement, reactive power divider induced off-axis scan blindness caused by an odd mode coupled field is prevented. Additionally, an antenna module comprising a pair of such antenna elements disposed in intersecting relationship is provided with a coincident phase center.

Radio frequency antenna

An improved Lens/Polarizer/Radome system to modify the antenna pattern of an existing array antenna is shown to consist of a unitary assembly made up of a dielectric lens of appropriate shape, polarization determining means and absorbing means, such assembly being disposed to cover the aperture of the existing array antenna.

Growing community of inventors

Santa Barbara, CA, United States of America

Keith C Smith