Abstract: RF sampling receivers are disclosed that employ multiple sampling clocks to produce multiple projections. In operation, a Nyquist folded receiver (NYFR) may be implemented that utilizes at least one modulated sampling clock in combination with one or more other modulated or non-modulated sampling clocks to identify received signals. In such an embodiment, one or more clock modulations may be used to induce frequency modulations that are Nyquist zone dependent, and multiple Nyquist zones may be aliased together while still allowing for signals from different Nyquist zones to be separated and identified.

Abstract: Problem solution speed may be increased by dynamically changing processing device computational hardware configuration in concert with respective mathematical phases of an algorithm to match accuracy demands at various phases of computation. Smaller but faster hardware structures may be increased in size using real-time partial or full reconfiguration of a processing device to apply the smallest and fastest possible computational structure for the needed accuracy during each of multiple computational phases.

Abstract: Antenna apparatus and methods of using the same that employ a broadband, planar, single feed ultra high frequency satellite communication (UHF SATCOM) antenna device which may be mounted on composite or other non-metallic and non-electrically conductive surfaces. The antenna apparatus may be implemented using a single antenna feed and impedance matching network with a low profile antenna shape that optimizes over-the-horizon gain, with no requirement for a ground plane. The antenna apparatus may also be implemented to cover the entire UHF SATCOM frequency band using a single antenna feed.

Abstract: Systems and methods for data separation, which may be employed to receive and process RFID tag data in RF signal environments where multiple RFID tags are tracked, localized and/or employed to transmit information. The disclosed systems and methods may be implemented for data separation in a high density aRFID environment using RFID tags in combination with spatial and/or frequency separation.

Abstract: Systems and methods for partial reconfiguration of reconfigurable application specific integrated circuit (ASIC) devices that may employ an interconnection template to allow partial reconfiguration (PR) blocks of an ASIC device to be selectively and dynamically interconnected and/or disconnected in standardized fashion from communication with a packet router within the same ASIC device.

Abstract: Interferometric angle-of-arrival (AOA) ambiguities due to local multipath reflections are resolved by measuring the received phase differences of one or more pairs of antenna elements of the interferometer array, constructing hypotheses from unwrapped phase pairs that correspond to potential AOA solutions, and selecting the hypothesis that most likely represents the true AOA of the signal emitter based on processed unwrapped data that has been corrected through the application of a priori calibration terms selected on the bases of the candidate hypotheses.

Abstract: Systems and methods are disclosed that provide ultra-wideband frequency hopping spread spectrum (UWB-FHSS) solutions for transmit and receive architectures. These UWB-FHSS transmit and receive architectures can transmit signals over an extremely wide bandwidth while using a relatively slow analog-to-digital converter (ADC) without suffering from unacceptable performance degradation. For example, ADCs can be used having sample rates lower than standard Nyquist criteria would require for the bandwidth of the spread spectrum utilized.

Abstract: A hinge assembly may be provided to hingeably couple two substrates together to allow one of the substrates to pivot about the center plane of the other substrate. The hinge assembly may include two separable hinge components that are manufactured from lightweight materials and that are configured to provide up to about 180 degrees of swing for a door or other hingeably-coupled substrate. Polymer bushings may be employed to preclude the need for lubrication of the hinge assembly, and a spring loaded tab may be provided on a hinge pin of the hinge assembly to provide for ease of installation, removal or replacement of a hingeably coupled substrate. Flow channels with injection ports may be defined within each of the separable hinge components of the hinge assembly, and configured to evenly distribute injected bonding material around the components of the hinge assembly while they are positioned within respective substrate cavities.

Abstract: Ultra-wideband frequency hopping spread spectrum (UWB-FHSS) solutions are used for receive architectures. These UWB-FHSS receive architectures can receive signals transmitted over an extremely wide bandwidth while using a relatively slow analog-to-digital converter (ADC) without suffering from unacceptable performance degradation. For example, ADCs can be used having sample rates lower than standard Nyquist criteria would require for the bandwidth of the spread spectrum utilized.

Abstract: Systems and methods for securing seats and other components to a seat track that may be implemented to provide flush symmetric and asymmetric seat track fitting assemblies that accommodate variances in the height of seat track extrusions. A component may be secured to mate directly with a seat track fitting surface and uppermost surface (flange) of a seat track, and with a fitting securing component (retainer or capture component) that provides additional load path in the lateral shear plane (X axis) while optimizing length of thread engagement of the component fastener.

Abstract: Ultra-wideband frequency hopping spread spectrum (UWB-FHSS) solutions are used for transceiver architectures. These UWB-FHSS transceiver architectures can transmit and accurately digitize frequency hops over an extremely wide bandwidth while using a relatively slow analog-to-digital converter (ADC) without suffering from unacceptable performance degradation. For example, ADCs can be used having sample rates lower than standard Nyquist criteria would require for the bandwidth of the spread spectrum utilized.

Abstract: Systems and methods for detecting and/or identifying signals that employ streaming processing to generate time-frequency surfaces by sampling a datastream according to a temporal structure that may be chosen as needed. The sampled datastream may be correlated with a set of templates that span the band of interest in a continuous manner, and used to generate time-frequency surfaces from irregularly sampled data with arbitrary structure that has been sampled with non-constant and non-Nyquist sampling rates where such non-constant rates are needed or desired.

Abstract: Sampling may be employed to cancel an analog input radio frequency (RF) signal by using an upconverted analog cancellation RF signal to cancel the analog input RF signal at the sample instances. At least two sampling paths may be employed, a signal path and a cancel path, and direct RF bandpass sampling may be included in both the signal and cancel paths.

Abstract: Systems and methods for interference cancellation in which a first signal having a first frequency may be cancelled with a second frequency having a second and different (e.g., lower) frequency by employing sampling to cancel the first signal with the separate signal at the sample instances.

Abstract: Apparatus and methods for fabricating materials by die-forming that may be implemented to form a joggle in a bendable workpiece by securing the workpiece to each of at least two respective adjacent working areas, and then by displacing at least one of the at least two working areas relative to an adjacent working area in order to induce the joggle within the workpiece.

Abstract: Reconfigurable communications infrastructures may be implemented to interconnect ASIC devices (e.g., FPGAs) and other computing and input/output devices using high bandwidth interconnection mediums. The computing and input/output devices may be positioned in locations that are physically segregated from each other, and/or may be provided to project a reconfigurable network across a wide area. The reconfigurable communications infrastructures may be implemented to allow such computing and input/output devices to be used in different arrangements and applications, e.g., for use in any application where a large array of ASIC devices may be usefully employed such as supercomputing, etc.

Abstract: Systems and methods that may be employed to communicate location information between two or more aerial vehicles or other types of vehicles or other entities, and/or that may be used to facilitate coordinated operations of two or more such entities. In one example, an aerial vehicle may be kept aware of one or more location (e.g., longitude, latitude, etc.) and/or flight characteristics (e.g., altitude, directional heading, airspeed, attitude, etc.) of one or more other adjacent aerial vehicles, and each such aerial vehicle may use that location information to adjust its flight path to maintain a safe sphere of empty airspace around itself.

Abstract: A signal of interest (SOI) may be selected from among a plurality of cochannel signals based on one or more internal or external structural feature/s of the SOI, e.g., automatically selected based on any one or more internal or external structural features of the SOI that is known a priori. Examples of such internal structural features include, but are not limited to, number, frequency and/or absolute or relative signal strength (signal to noise ratio) of one or more transmitted signal components (e.g., pilot tones, squelch tones, etc.) present in the SOI; absence of a signal component at a given frequency in the SOI (i.e., present as a “dead spot” at a given frequency within the SOI); signal strength versus frequency profile of the SOI, signal strength versus time domain profile of the SOI, transient characteristics, time versus frequency profile, etc.

Abstract: A linear combiner weight memory. Various embodiments of the weight memory provide a weight bank and control logic. The weight bank is operable to couple with a data stream and may include four registers. The first register is operable to store a first in-phase weight value. The second register is operable to store a second in-phase weight value and be written with the second in-phase weight value while the first in-phase weight value is read from the first register. The third register is operable to store a first quadrature weight value. The fourth register is operable to store a second quadrature weight value and be written with the second quadrature weight value while the first quadrature weight value is read from the third register.

Abstract: One or more nodes of a network may be configured to provide substitute header information for insertion into a received data packet and then to retransmit the data packet with the modified header information to other network destinations. One or more other downstream nodes may be configured to do likewise, thus allowing a packet to proceed through a selected number of multiple destinations in the network without being shortened, and so that the number of control words required in each packet is reduced, in increasing data bandwidth for the network.