Electronics
Magnetometer for Vectorized Field Sensing via Zero-Field, Spin-Dependent Recombination in Silicon Carbide Microelectronics
Posted in Briefs, Electronics on Saturday, 30 April 2016
This self-calibrating, solid-state-based magnetometer is intended for miniaturized applications in high-temperature and high-radiation environments. NASA’s Jet Propulsion Laboratory, Pasadena, California The proposed technology involves the sensitive detection of magnetic fields using the zero-field, spin-dependent recombination (SDR) phenomenon that naturally arises from atomic-scale, deep-level defects intrinsic to silicon carbide (SiC) microelectronics. The SDR phenomenon enables the fabrication of SiC-based magnetic field sensing diodes that are ideal for the development of miniaturized and purely electrical-based magnetometers.
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Ethernet-to-HRDL Conversion Design
Posted in Briefs, Electronics on Saturday, 30 April 2016
Dual Ethernet inputs are multiplexed into a single HRDL stream to accommodate Ethernet-based ISS instruments. Goddard Space Flight Center, Greenbelt, Maryland The International Space Station (ISS) uses a fiber optic High Rate Data Link (HRDL) standard for transferring data. ISS experiments, however, may prefer an Ethernet interface. This design allows ISS instruments to keep their Ethernet interface by converting the Ethernet data format into a format compatible with the ISS. The Express Logistics Carrier (ELC) incorporated this design on the ISS in 2010. The design was described with VHDL code. It has been implemented with an Actel RTAX Field Programmable Gate Array (FPGA). This FPGA is part of the Express Logics Carrier (ELC) onboard the ISS.
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Flash LIDAR Emulator
Posted in Briefs, Electronics on Saturday, 30 April 2016
Langley Research Center, Hampton, Virginia The Flash LIDAR Emulator is a computer system designed to be functionally equivalent to a Flash LIDAR sensor camera. The system has the same hardware interfaces as the sensor, and produces images of comparable quality to the flash LIDAR sensor in real time (30 frames per second). The emulator is then used as a substitute for the LIDAR camera during development and testing of the software algorithms and hardware systems that interface with the camera. The emulator software was custom-developed entirely in-house, and integrates tools and techniques from several computer fields, including parallel processing, ray-tracing, geometric optimization, CPU optimization, CameraLink interfaces, lowlevel networking, and GPU-based general computing. The software was designed to run on an 8-processor Dell workstation with an NVIDIA graphics card to support general-purpose GPU computing, and CameraLink and network interfaces to support the hardware interfaces of the Flash LIDAR camera.
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Architecture for an Intermediate-Frequency Digital Downconversion and Data Distribution Network
Posted in Briefs, Electronics on Saturday, 30 April 2016
Developed originally for Deep Space Network downlink receivers, applications include high-speed digital receivers for cellular networks. NASA’s Jet Propulsion Laboratory, Pasadena, California NASA’s Deep Space Network (DSN) is looking to modernize aging downlink receivers for telemetry, tracking, and radio science. It is looking to replace multiple types of custom-built, special-purpose receivers with a unified receiver architecture that can support the various downlink data types. As part of this modernization, it is desired to only digitize the data once and then distribute the data using commercial switching network technology to multiple back-end receiver processing hardware and software. The main problem to be solved is how to distribute efficiently and flexibly high-bandwidth intermediate-frequency (100 to 600 MHz) digitized signals across a signal processing center for use in the DSN.
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Creating the World’s Smallest Diode
Posted in News, Electronic Components, Electronics on Wednesday, 27 April 2016
Engineers are struggling to shrink the silicon used in processors to power increasingly smaller computing hardware and are rapidly reaching the point where silicon’s performance starts to degrade due to its size. To move beyond the material’s physical limitations, researchers at Ben-Gurion University of the Negev in Israel and the University of Georgia, Athens, have discovered how to use a single molecule of DNA to create the world’s smallest diode, which controls the flow of electricity by allowing it to travel in just one direction.
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Engineers Embroider Wearable Antennas
Posted in News, Electronic Components, Electronics, Diagnostics, Patient Monitoring, Data Acquisition, Sensors on Monday, 18 April 2016
Researchers at The Ohio State University have embroidered circuits into fabric with 0.1 mm precision -- an ideal size for integrating sensors and electronic components into clothing. The achievement supports the development of new wearable technology, including a bandage that monitors tissue or a flexible fabric cap that senses brain activity.
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Miniaturized Electronic Devices as Medical Therapeutics
Posted in News, Electronic Components, Electronics, Power Supplies, Diagnostics, Drug Delivery & Fluid Handling, Implants & Prosthetics, Patient Monitoring on Monday, 18 April 2016
Ada Poon, an Associate Professor of Electrical Engineering at Stanford University, is pioneering research to develop electronic therapies to heal the body from within, working to add control and feedback for a closed-loop system that could improve therapeutic outcomes. These new electronic devices, which can be programmed to respond to the body’s feedback and modulate their own effects after implantation, are called electroceuticals.
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