Electrical/Electronics

Smartwatches Can Now Track Your Finger in Mid-Air using sonar

As mobile and wearable devices such as smartwatches grow smaller, it gets tougher for people to interact with screens the size of a matchbook. That could change with a new sonar technology developed by University of Washington computer scientists and electrical engineers that allows you to interact with mobile devices by writing or gesturing on any nearby surface — a tabletop, a sheet of paper or even in mid-air.

Posted in: Articles, Electronics & Computers
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1U CPU Cooler

Specifically designed for use with data storage, high-density, backup, or cloud servers, Jaro's (Boca Raton, FL) new low-profile, 1U CPU cooler (with heat-sink) is perfect for Intel processors that interact with square socket (2011) types. The high-quality coolers come in two sizes, one of which provides a narrow heat-sink solution. Both are popular in small space applications. This new (dual bearing) CPU cooler & heat-sink combination is enhanced by skived, copper fins. As each copper fin is individually attached to the heat-sink, it is able to provide evenly-distributed levels of cooling. The 1U boasts an impressive 70,000 hours of long life, at 40 DegC / 65%.

Posted in: Products, Electronics & Computers
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Panel-Mount Connectors

TE Connectivity Ltd. (TE) (Harrisburg, PA) has launched its DEUTSCH 369 series panel-mount connectors. The new panel-mount connectors have the ability to mount in seconds, suit multiple panel thicknesses, accept the use of standard 369 wire strain-relief backshell and require no fasteners, featuring an anti-rattle panel gasket. The product’s rectangular shape permits space-efficient stacking and remains fully compatible with the standard 369 series connectors. The electrical interfaces are fully sealed for use in areas with high levels of moisture, using cork-in-bottle and triple wire seal technology.

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Thin Film, Miniaturized Components

Goodfellow (Coraopolis, PA) and the German technology company Acquandas GmbH have partnered to offer micro-patterned, 2D and 2.5D integrated multi-function miniaturized components and coatings. Materials currently available include nitinol (NiTi) and other superelastic or shape memory alloys, bioresorbable alloys, magnetic materials, as well as electrical alloys and insulators. In defense, aerospace, automotive, telecommunications, test equipment and manufacturing automation the technology finds application in shape memory alloy-based electrical actuators for robotic applications, and for the latest microelectromechanical (MEMS) technology to manufacture miniaturized electronic relays, position-sensing linear actuators, micro relays, micro valves and micro pumps.

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Magnetometer

MEMSIC Inc. (Andover, MA) has announced the availability of its MMC3630KJ, an ultra-small size, BGA package, magnetometer for portable devices. The MMC3630KJ series magnetometer includes an integrated monolithic 3-axis AMR sensor and a signal conditioning ASIC in an ultra-small (1.2x1.2x0.5mm) BGA package. The MMC3630KJ is designed in AMR technology with the ability to reach ±30G range, and more than 5x better noise level compared to other technologies. With 600Hz magnetic sensing bandwidth, the MMC3630KJ is able to provide better than ±10 accuracy in eCompass applications.

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Radiation-Hardened, High-Voltage, Quad-Channel Amplifier

Aradiation-hard, 130-Volt, 100-KHz capable, quad-channel operational amplifier with corresponding power supply and 6th-order Bessel filter circuitry has been designed, fabricated, and successfully tested. To control two-axis microelectromechanical systems (MEMS)-based mirrors, a differential high-voltage amplifier is required. The bandwidth of these mirrors is generally

Posted in: Briefs, Electronics & Computers, Mirrors, Amplifiers, Microelectromechanical devices
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Reduced-Cost, Chirped Pulse, Fourier Transform Microwave (CP-FTMW) Spectrometer Using Direct Digital Synthesis

This technology could be used to further extend the bandwidth of the instrument.

Goddard Space Flight Center, Greenbelt, Maryland

Microwave spectroscopy is an invaluable tool for studying the structure, dynamics, and even the handedness of gas phase species. In particular, the specificity of microwave spectroscopy has been central to the unambiguous identification of the great majority of molecules detected in the interstellar medium. Applications of microwave techniques to problems in physical chemistry and molecular astrophysics have been greatly accelerated by developments in laboratory techniques.

Posted in: Briefs, Electronics & Computers, Spectroscopy, Identification, Chemicals, Gases, Test equipment and instrumentation
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Signal Digitizer and Cross-Correlation ASIC

The device can correlate outputs from a large number of receivers.

NASA’s Jet Propulsion Laboratory, Pasadena, California

Microwave interferometry provides a means of synthesizing large scanning antennas that are not otherwise physically practical for spaceborne Earth observational systems. By cross-correlating multiple receivers of an array, high-resolution images are synthesized from a sparse — or thinned — array of small antennas rather than relying on extremely large mechanically scanned antennas. For Earth observations from space, high-datarate cross correlators are required that operate with low power and have low mass and complexity. ASIC (application-specific integrated circuit) cross-correlators are an enabling technology for space-based interferometry. An ASIC CMOS (complementary metal-oxide semiconductor) cross-correlator was developed to correlate outputs from a large number of receivers.

Posted in: Briefs, Electronics & Computers, Antennas, Imaging and visualization, Satellite communications, Surveillance
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Image Capture to Stereo Correlation in an FPGA

NASA’s Jet Propulsion Laboratory, Pasadena, California

In this work, there were four independent vision modules implemented in an FPGA: a CameraLink camera interface, rectification, bilateral filtering, and stereo disparity correlation. Each module was originally designed to run from end to end, not in a pipeline with the other modules. This limited throughput to 3.75 Hz.

Posted in: Briefs, Electronics & Computers, Architecture, Electronic equipment, Imaging and visualization, Optics
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Offset IQ Modulation Technique for Miniaturized Radar Electronics

This innovation can be used in aerospace and commercial weather radar applications.

Constellations of low-cost, small instruments provide global, distributed, and frequent coverage, enabling unique science observations. However, radars are active instruments with size, mass, and power requirements that are often not compatible with small satellite platforms such as CubeSats or SmallSats.

Posted in: Briefs, Electronics & Computers, Downsizing, Radar, Satellites
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