Electronics & Software

Communications

Briefs : Communications
Personal Annunciation Device (PAD)

Many industrial and commercial plants, government and private research facilities, and industrial facilities perform potentially dangerous processes. Automated warning and alarm systems alert personnel to...

Briefs : Communications
Mobile Underwater Acoustic Communications

Reliable, long-range acoustic communications (LRAC) is an enabling technology for numerous applications of manned and unmanned underwater systems. For example, with the capability of communicating at...

Briefs : Communications
A Smooth-Walled Feedhorn with Sub-30-dB Cross-Polarization Over a 30-Percent Bandwidth

The focus of this research was the design, optimization, and measurement of a monotonically profiled, smooth-walled scalar feedhorn with a diffraction-limited ~14° FWHM (full width at half maximum). It is an easier-to-manufacture, smooth-walled feed that...

Briefs : Communications
Wireless Virtual Reality Headset

One of the limits of today's virtual reality (VR) headsets is that they must be tethered to computers in order to process data well enough to deliver high-resolution visuals. Wearing an HDMI cable reduces...

Briefs : Communications
Wideband Retroreflector

There are many known methods of retransmitting radio wave signals intra-building and inter-building, as well as ground-to-aircraft or ground-to-satellite. Some techniques modulate the reflection coefficient of an antenna. Prior art has used frequency multiplication or field effect transistor (FET) mixing to modulate the...

On-Demand Webinars : Communications
Technical Webinar Series from the Editors of SAE: Connected Vehicles & Jobsites

Fleet owners have been deploying telematic solutions for some time, but connectivity is still just beginning to move from early adopters to mass market. Connectivity is providing more owners and operators a broad range of benefits, prompting a surge of developments...

White Papers : Medical
Printed Electronics Primer: an Introduction to the Basics of Printed Electronics

This white paper provides an overview of how printed electronics (PE) can help you fit more functionality into smaller spaces, while maximizing cost efficiency. You will learn the basic terminology and gain an understanding of today’s PE industry, including...

Briefs : Communications
Polarization-Dependent Whispering Gallery Modes (WGMs) in Microspheres

Dielectric microspheres are optical structures that exhibit resonant properties, meaning they can be used to select very narrow wavelengths of an incoming light beam's...

Briefs : Communications
Cellular Reflectarray Antenna and Method of Making Same

NASA's Glenn Research Center invites companies to license a new concept design for terrestrial satellite dishes and communications systems. The Cellular Reflectarray Antenna (CRA) has...

Briefs : Communications
9-Meter Slaving System

The objective of the 9-Meter Slaving System is to transmit Launch Trajectory Acquisition System (LTAS) data from one of multiple incoming data streams to the 9-Meter antenna control unit using a synchronous serial modem. The data stream is determined by a 9-Meter telemetry operator's selection via a graphical user...

Briefs : Communications
Ad Hoc Selection of Voice Over Internet Streams

NASA seeks interested parties to license the Ad Hoc Selection for Voice Over Internet (VoIP) Streams technology developed by engineers at Johnson Space Center. This technology features the ability to select specific audio streams from one or more sources and then convert them into a multicast to...

Briefs : Communications
Deep-Space Positioning System

NASA's Jet Propulsion Laboratory (JPL) has developed a compact, low-power, self-contained instrument that provides the equivalent of GPS throughout the solar system without the aid of an artificially provided infrastructure. The state-of-the-art X-ray navigation instrument is also able to determine the position of a...

Briefs : Communications
GPS Satellite Geometry Analysis Tool (GPSGEM)

The purpose of the GPS Satellite Geometry Analysis Tool (GPSGEM) is to evaluate GPS satellite geometry for a given Earth-fixed location or for a provided trajectory. The tool will generate a listing of all satellites in view, the best satellite combination defined by the most optimum Geometric...

News : Communications
Q&A: Photonics Breakthrough 'Tunes' Wireless Communications

A chip-scale optical device, developed by a team from the University of Sydney’s Australian Institute for Nanoscale Science and Technology, achieves radio frequency signal control at sub-nanosecond time scales. The photonics breakthrough has the potential to provide broader bandwidth...

Who's Who : Communications
Darmindra Arumugam, Senior Research Technologist, Jet Propulsion Laboratory, Pasadena, CA

In outdoor locations, firefighters and emergency responders can use GPS technology to track one another. Indoor environments like high-rises and steel-reinforced structures, however, frequently block radio signals. With the development of POINTER (Precision...

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