Abstract: A switch matrix structure for planar circuitry such as printed circuit boards and integrated circuits includes a plurality of signal dividers and a plurality of switches. Each signal divider is configured to receive a corresponding input signal and generate a corresponding plurality of divider output signals. Each switch is configured to receive a corresponding divider output from a corresponding signal divider. Each switch is configured to provide a corresponding output signal such that a plurality of output signals are generated by the plurality of switches. In an example, the plurality of switches are arranged in a column, with a first subset of the plurality of signal dividers on a first side of the column, and a second subset of the plurality of signal dividers on a second side of the column. In an example, such a routing configuration reduces a number of routing layers and/or a number of via transitions.

Abstract: Integrated capacitor structures are described. In an example, an interconnect structure includes a first layer of conductive material and a second layer of conductive material. The first layer includes a first horizontal portion having a first opening and extending along a first horizontal plane, and a first vertical portion. The second layer includes a second horizontal portion having a second opening and extending along a second horizontal plane, and a second vertical portion. The interconnect structure also includes a dielectric extending along a third horizontal plane between the first and second horizontal portions, and having one or more openings. The first vertical component extends upward from the first horizontal portion, through one opening in the dielectric and the second opening of second layer, and the second vertical component extends downward from the second horizontal portion, through another opening in the dielectric and the first opening of first layer.

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes steering a beam in a specified direction to generate a power measurement, the specified direction selected from a plurality of directions, such that the method comprises scanning through the plurality of directions. The method also includes adaptively steering a null in the specified direction and measuring a gain of the received signal in the null direction. The method further includes calculating a difference between the power measurement and the measured gain and generating a difference-based detection that the received signal is associated with a jammer at the specified direction. The difference-based detection is based on a comparison of the power difference to a power difference threshold value. The power difference threshold value is based on a desired probability of false alarm and probability of detection, and/or desired angular resolution.

Abstract: A feed forward guidance kit for a ballistic device that includes at least one optical imaging sensor, a processor that is operatively in communication with the at least one optical imaging sensor, and a feed forward guidance protocol that is stored on a computer readable medium and that is operatively in communication with the processor. When the at least one optical imaging sensor initially intercepts an aircraft at an initial location during combat, the feed forward guidance protocol instructs the processor to proactively calculate an anticipated second position of the aircraft as an orientation of the aircraft changes from an initial orientation to a translated orientation.

Abstract: Techniques for satellite signal authentication. In an example, a Global Positioning System (GPS) or global navigation satellite system (GNSS) includes antenna electronics, a processor, and a GPS or GNSS receiver. The antenna electronics is configured to provide, to the GPS or GNSS receiver, signals, wherein the signals comprise GPS or GNSS satellite signals received from a set of GPS or GNSS satellites and/or one or more falsified signals, such as spoofer signals (falsified). The processor is configured to determine, based on an expected location of a respective GPS or GNSS satellite of the set of GPS or GNSS satellites, an expected gain or expected power for a respective signal of the signals. The GPS or GNSS receiver is configured to measure a power of the respective signal, compare the measured power to the expected gain or expected power, and determine whether the respective signal is falsified based on the comparison.

Abstract: A method of scheduling commands for execution in a computing device includes receiving command data, where the command data includes a command to be executed on a processor and an execution start time for executing the command; storing the command data in a data storage; reading, responsive to determining that the execution start time is within an execution window, the command data from the data storage; and causing the command data to be output to a processor for execution. The method can include assigning a label to the command data, where the label corresponds to an address in the data storage, and where the command data is stored at, and read from, the address in the data storage. The method can include storing, responsive to determining that the execution start time is not within the execution window, the label, and the execution start time in a fast scheduler memory.

Abstract: Techniques are provided for jammer detection. A methodology implementing the techniques according to an embodiment includes steering a beam in a specified direction to generate a power measurement, the specified direction selected from a plurality of directions, such that the method comprises scanning through the plurality of directions. The method also includes adaptively steering a null in the specified direction and measuring a gain of the received signal in the null direction. The method further includes calculating a difference between the power measurement and the measured gain and generating a difference-based detection that the received signal is associated with a jammer at the specified direction. The difference-based detection is based on a comparison of the power difference to a power difference threshold value. The power difference threshold value is based on a desired probability of false alarm and probability of detection, and/or desired angular resolution.

Abstract: Hybrid MB/ML techniques for automated printed circuit board (PCB) defect detection. In one example, a PCB inspection system implements a hybrid solution using model based (MB) and machine learning (ML) technologies to detect possible defects in a PCB via an automated image capture device and processing methodology. The processing methodology fuses features from MB and ML at the latent representation. An autoencoder can be used to learn the fused data by training a neural network to produce a reconstructed image that can be compared to an original image to generate a reconstruction error value. The system produces an output indicating detection of a defect in one or more features of interest based on the reconstruction error value transgressing a threshold value.

Abstract: A collet for multiple wire elements is disclosed. In an example, the collet has a body made of a polymeric material and extends along a central axis from a first end to a second end. The body defines a first passageway extending axially through the body, the first passageway in communication with the environment via a first insertion opening extending along an entire length of the first passageway. The body defines a second passageway extending axially through the body and in communication with the environment along an entire length of the second passageway via a second insertion opening, the second passageway spaced circumferentially from the first passageway. When installed, the collet frictionally engages wire elements when a first wire element is seated in the first passageway and a second wire element is seated in the second passageway.

Abstract: A liquid-cooled printed circuit board chassis, such as a Eurocard chassis, is manufactured without brazing by 3D printing a plurality of components, smoothing and completing the components by subtractive manufacture, and then aligning and assembling the final chassis, all without application of heat. Horizontal cooling channels 3D printed within the chassis components are in thermal contact with board slots, and are divided into subchannels by closely spaced internal walls that function as thermal baffles. The baffles are tilted at oblique angles to increase their cooling efficiency, and to enable AM manufacture without temporary support structures. Elastomer seals between components can connect the cooling channels to vertical connecting channels. EMI seals can be formed between the components by EMI gaskets. The components can be aligned by alignment pins, and joined together by bolts, screws, and/or adhesives.

Abstract: Techniques to dynamically adjust the corner frequency of a high-pass filter in response to a time-domain amplitude value of an output signal, thereby preserving accuracy while promptly recovering the signal's baseline value. A system can be configured to filter frequency-domain values of an input signal based on a filtering characteristic. The filtering characteristic can be set dynamically in response to a time-domain value of an amplitude of an output signal. The filtering characteristic can comprise a corner frequency, and the system can include a high-pass filter configured to filter out frequency components at frequencies lower than the corner frequency. The system is configured to dynamically change the corner frequency from a first value to a second value, in response to the time-domain value of the amplitude crossing a threshold value. The system may dynamically change the corner frequency within a time interval after the crossing.

Abstract: A panoramic Mid-Wavelength Infrared (MWIR) lens has a plurality of optical elements, wherein each optical element from the plurality of elements is formed from a material that transmits in at least the MWIR band from 3 ?m to 5 ?m. The plurality of optical element are arranged in a manner that provides a 360 degree azimuth angle and an elevation angle that is within +/?20° from a 90° horizon. The panoramic MWIR lens is configured to be connected to a cooled Dewar, wherein the Dewar includes a cold shield and an image plane to detect light in the MWIR band transmitted through the plurality of optical elements.

Abstract: A microelectronics device structure includes a device having (i) a lower surface, (ii) an upper surface opposite the lower surface, and (iii) a side surface extending between the lower surface and the upper surface. The integrated circuit structure further includes a conductive line having (i) a first section on the upper surface, (ii) a second section on the side surface, and (iii) a third section on the lower surface. In an example, the first section and the second section of the conductive line is a monolithic conductive structure, with no seam or interface between the first section and the second section. Additionally or alternatively, in an example, the second section and the third section of the conductive line is a monolithic conductive structure, with no seam or interface between the second section and the third section.

Abstract: An integrated circuit structure includes (i) a first layer including a first metal, (ii) a second layer above and in contact with the first layer, the second layer including a resistive material, and (iii) a third layer above and in contact with the second layer, the third layer including a second metal. In an example, the resistive material is different from one or both the first metal and the second metal. An interconnect component is above and in contact with the second layer. In an example, the interconnect component is a solder bump or a solder ball. In an example, a resistivity of the resistive material of the second layer is at least 20%, or at least 50% greater than a resistivity of each of the first and third layers. In an example, the resistive material includes a third metal different from the first and second metals and/or a metalloid.

Abstract: A method includes forming a plurality of islands of first material on a plurality of first sections of a layer. A plurality of second sections of the layer are not covered by the first material. The method further includes depositing a second material on (i) the islands of first material and (ii) the second sections of the layer that are not covered by the islands of first material. The method further includes evaporating and/or sublimating the islands of first material and removing remnants of the second material that were on the islands of the first material. In an example, the second material remains on the second sections of the layer, to thereby form a pattern of the second material on the layer. In an example, the first material is a monomer, and the second material is a conductor or a dielectric or a semiconductor.

Abstract: A method of enhanced processing used to discriminate between ADS-B messages with a duplicate announced address comprising: receiving ADS-B messages that comprise information for display by a display of traffic information from at least two targets on a receiver; identifying the ADS-B messages having the duplicate announced address with one of the at least two targets using at least one discriminator by assigning a weighting factor to the at least one discriminator and, where the integration of the at least one discriminator and weighting factor exceeds a predetermined threshold value, considering the ADS-B messages that were subject to the at least one discriminator as being discriminated messages associated with one of the at least two targets; and displaying information provided by the discriminated messages on a display of traffic information as if the discriminated messages had been initially associated with only one of the at least two targets.

Abstract: A method for discriminating between spoofed and valid ADS-B tracks includes applying a plurality of spoofing detection tests to an ADS-B waveform, applying weighting factors to the resulting test scores, and combining the weighted scores to obtain a confidence level indicating whether the ADS-B track is valid or spoofed. The detection tests can include power level validation, Doppler offset, ADS-B rules-based analysis, multi-band detection, track origination detection, and antenna diversity. The selection of applied detection tests and/or weighting factors can be adjusted and/or selected from corresponding libraries, according to operating conditions. Tracks can be displayed together with confidence level indications, and/or excluded from display if their confidence levels are below an adjustable threshold. Weighting factors can be chosen and/or updated by a machine learning model according to success in detecting simulated and/or actual spoofed tracks.

Abstract: Techniques and architectures are disclosed for a system capable of creating large changes in buoyancy that can be incorporated into underwater vehicles, embodiments of the system utilizing edge-welded, metal bellows disposed within a pressure vessel to balance a pressure differential across the bellows while using the bellows to displace fluid and thereby alter the buoyancy of a vehicle on which the system is disposed.

Abstract: A multi-bit, asynchronous e-fuse macro, the macro comprising: an input output enable, a power on reset, a write address, an input write enable, a ground clamp enable, and a write clock; a plurality of e-fuse bits; a supply voltage configured to allow programming at least one of the e-fuse bits; at least one fuse output; and self-timing and control circuitry configured to perform signaling, wherein each of the inputs is in electrical communication with the e-fuse macro.

Abstract: A low profile, broadband radiator operates as a dielectric rod antenna (DRA) but is conformally mounted to a conducting sheet along its axis of symmetry. The new device exploits the imaging theory of electromagnetics to split the DRA in half while maintaining its full-height TEM feed, HE11 waveguide, and radiation taper characteristics. The disclosed device is attractive for applications requiring directed energy on or near the axis of the antenna, i.e. ‘end-fire’, and for high shock and velocity environments. Bandwidth extension is realized by adding one or more cores of higher dielectric material and by modifying the feed and mode formation regions. A second polarization is generated by configuring the feed for odd-mode transmission and creating a flared notch radiator within a metallized split launcher.