Abstract: A system for testing sensors is disclosed. The system includes a platform having a plurality of mounting holes and a microcontroller, the microcontroller having a wireless network interface. The system also includes a mount releasably coupled to the platform through a mounting hole, the mount configured to hold a sensor. The system includes a motor operatively coupled to the platform, and a motor controller communicatively coupled to the motor and configured to drive the motor to rotate the platform about an axis of rotation at a target speed. The microcontroller is communicatively coupled to a sensor releasably coupled to the mount. The microcontroller is configured to receive a measurement from the sensor that is output by the sensor in response to the platform being rotated such that the mount is subjected to a constant centripetal force. The microcontroller is configured to wirelessly transmit the measurement to an external device.

Abstract: A radar system applies various angle correction processes with varying levels of computational overhead to reduce errors in angle estimation when processing received return signals. The various angle correction processes aim to overcome systematic errors affected by range migration through correction based on simulation or hardware measurements, through non-iterative refinement, iterative refinement, and/or a combination of correction and iterative refinement.

Abstract: Mismatch detection using periodic structures is provided. Embodiments described herein can measure and detect mismatch between two loads in a radio frequency (RF) system without the need for external calibration by referencing their measurements into a small set of parameters that are intrinsic to the RF system design. This approach can be used to compare impedances of two loads and measure their impedances relative to each other without requiring any external calibration (e.g., the approach does not assume any prior known physical quantities in the system, such as a reference impedance). This approach can be used to compare the two loads to each other, as well as to quantify the amount of mismatch between these loads by calculating reflection coefficient between the loads. Loads can be passive devices, such as antennas, or they can be active devices, such as amplifiers.

Abstract: A valve device monitoring system for at-home human-in-the-loop hydrocephalus shunt monitoring detects degradation and imminent failure of implantable devices for the treatment of hydrocephalus. Potential mechanisms for failure are presented and associated with observable parameters. The valve device monitoring system enables at-home testing using a non-invasive monitoring methodology. Development of a behavioral model of the valve device monitoring system involves a tightly-coupled valve design and behavioral characterization process aimed at reducing unnecessary monetary, material, animal welfare, and computational costs.

Abstract: A radar system applies various angle correction processes with varying levels of computational overhead to reduce errors in angle estimation when processing received return signals. The various angle correction processes aim to overcome systematic errors affected by range migration through correction based on simulation or hardware measurements, through non-iterative refinement, iterative refinement, and/or a combination of correction and iterative refinement.

Abstract: Mismatch detection using periodic structures is provided. Embodiments described herein can measure and detect mismatch between two loads in a radio frequency (RF) system without the need for external calibration by referencing their measurements into a small set of parameters that are intrinsic to the RF system design. This approach can be used to compare impedances of two loads and measure their impedances relative to each other without requiring any external calibration (e.g., the approach does not assume any prior known physical quantities in the system, such as a reference impedance). This approach can be used to compare the two loads to each other, as well as to quantify the amount of mismatch between these loads by calculating reflection coefficient between the loads. Loads can be passive devices, such as antennas, or they can be active devices, such as amplifiers.

Abstract: A dynamic-zoom analog to digital converter (ADC) having a coarse flash ADC and a fine passive single-bit modulator is disclosed. Radio frequency (RF) devices incorporating aspects of the present disclosure may support multiple wireless modes operating at different frequencies. Therefore, the RF devices have need for an ADC which is flexible and optimizable in terms of resolution, bandwidth, and power consumption. In this regard, the RF devices incorporate circuits, such as ADC circuits, which incorporate a discrete-time passive delta-sigma modulator. In order to improve the resolution of the delta-sigma modulator, a coarse ADC is deployed as a zooming unit to a single-bit passive delta-sigma modulator to provide a coarse digital conversion. Coarse conversion is used to dynamically update reference voltages at an input of the delta-sigma modulator using a multi-bit feedback digital to analog converter (DAC). The dynamic-zoom ADC supports multiple modes with improved power and quantization noise.

Abstract: A dynamic-zoom analog to digital converter (ADC) having a coarse flash ADC and a fine passive single-bit modulator is disclosed. Radio frequency (RF) devices incorporating aspects of the present disclosure may support multiple wireless modes operating at different frequencies. Therefore, the RF devices have need for an ADC which is flexible and optimizable in terms of resolution, bandwidth, and power consumption. In this regard, the RF devices incorporate circuits, such as ADC circuits, which incorporate a discrete-time passive delta-sigma modulator. In order to improve the resolution of the delta-sigma modulator, a coarse ADC is deployed as a zooming unit to a single-bit passive delta-sigma modulator to provide a coarse digital conversion. Coarse conversion is used to dynamically update reference voltages at an input of the delta-sigma modulator using a multi-bit feedback digital to analog converter (DAC). The dynamic-zoom ADC supports multiple modes with improved power and quantization noise.

Abstract: A level of indirection is utilized when writing to a microprocessor array structure, thereby masking hard faults in the array structure. Among other benefits, this minimizes the use of a backward error recovery mechanism with its inherent delay for recovery. The indirection is used to effectively remove from use faulty portions of the array structure and substitute spare, functioning portions to perform the duties of the faulty portions. Thus, for example, faulty rows in microprocessor array structures are mapped out in favor of substitute, functioning rows.

Abstract: A level of indirection is utilized when writing to a microprocessor array structure, thereby masking hard faults in the array structure. Among other benefits, this minimizes the use of a backward error recovery mechanism with its inherent delay for recovery. The indirection is used to effectively remove from use faulty portions of the array structure and substitute spare, functioning portions to perform the duties of the faulty portions. Thus, for example, faulty rows in microprocessor array structures are mapped out in favor of substitute, functioning rows.

Abstract: A level of indirection is utilized when writing to a microprocessor array structure, thereby masking hard faults in the array structure. Among other benefits, this minimizes the use of a backward error recovery mechanism with its inherent delay for recovery. The indirection is used to effectively remove from use faulty portions of the array structure and substitute spare, functioning portions to perform the duties of the faulty portions. Thus, for example, faulty rows in microprocessor array structures are mapped out in favor of substitute, functioning rows.

Abstract: A level of indirection is utilized when writing to a microprocessor array structure, thereby masking hard faults in the array structure. Among other benefits, this minimizes the use of a backward error recovery mechanism with its inherent delay for recovery. The indirection is used to effectively remove from use faulty portions of the array structure and substitute spare, functioning portions to perform the duties of the faulty portions. Thus, for example, faulty rows in microprocessor array structures are mapped out in favor of substitute, functioning rows.