Electronics & Computers

Guidelines for Ensuring PCB Manufacturability

The rules of PCB design have changed little over the years, but the demands on the boards themselves keep increasing. The need for smaller, more complex boards used in smartphones, tablets, and other handheld devices translates into less real estate for greater functionality.

Posted in: Electronics & Computers, White Papers

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Thermally Conductive Epoxies Optimize Electronic Assemblies

The use and selection process of thermally conductive epoxies can make or break your application. Too much heat can lead to component malfunction or prematurecomponent failure while the inability to stay below specified temperature limits may result in irreversible damage and permanent performance shifts. Master Bond’s white paper compiles the most important considerations for the selection of epoxies for efficient thermal management.

Posted in: Electronics & Computers, White Papers

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Ultra-Wideband, Dual-Polarized, Beam- Steering P-Band Array Antenna

The novel design geometry can be scaled with minor modifications. A dual-polarized, wide-bandwidth (200 MHz for one polarization, 100 MHz for the orthogonal polarization) antenna array at P-band was designed to be driven by NASA’s EcoSAR digital beam former. EcoSAR requires two wide P-band antenna arrays mounted on the wings of an aircraft, each capable of steering its main beam up to 35° off-boresight, allowing the twin radar beams to be steered at angles to the flight path. The science requirements are mainly for dual-polarization capability and a wide bandwidth of operation of up to 200 MHz if possible, but at least 100 MHz with high polarization port isolation and low cross-polarization. The novel design geometry can be scaled with minor modifications up to about four times higher or down to about half the current design frequencies for any application requiring a dual-polarized, wide-bandwidth steerable antenna array.

Posted in: Electronics & Computers, Briefs, TSP

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Centering a DDR Strobe in the Middle of a Data Packet

The Orion CEV Northstar ASIC (application-specific integrated circuit) project required a DDR (double data rate) memory bus driver/receiver (DDR PHY block) to interface with external DDR memory. The DDR interface (JESD79C) is based on a source synchronous strobe (DQS\) that is sent along with each packet of data (DQ). New data is provided concurrently with each edge of strobe and is sent irregularly. In order to capture this data, the strobe needs to be delayed and used to latch the data into a register.

Posted in: Electronics & Computers, Briefs

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Submerged AUV Charging Station

Potential uses include studying ocean climate change, pollution, salinity, and currents. Autonomous Underwater Vehicles (AUVs) are becoming increasingly important for military surveillance and mine detection. Most AUVs are battery powered and have limited lifetimes of a few days to a few weeks. This greatly limits the distance that AUVs can travel underwater. Using a series of submerged AUV charging stations, AUVs could travel a limited distance to the next charging station, recharge its batteries, and continue to the next charging station, thus traveling great distances in a relatively short time, similar to the Old West “Pony Express.”

Posted in: Electronics & Computers, Briefs, TSP

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Using a Commercial Ethernet PHY Device in a Radiation Environment

This work involved placing a commercial Ethernet PHY on its own power boundary, with limited current supply, and providing detection methods to determine when the device is not operating and when it needs either a reset or power-cycle. The device must be radiation- tested and free of destructive latchup errors.

Posted in: Electronics & Computers, Briefs

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Telematics: An Industry Game-Changer

Telematics is the transmission of machine data to a remote consumer. If that remote consumer is an electronic device rather than a human, the process is called machine-to-machine (M2M) communications. The emerging M2M revolution is based on innovations in hardware and software that are converging to form a whole new way of transacting business.

Posted in: Electronics & Computers, Software, Communications, Machinery & Automation, White Papers

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White Papers

Automated Inspection Lowers Solar Cell Costs
Sponsored by Teledyne DALSA
How Paper-based 3D Printing Works: The Technology and Advantages
Sponsored by Mcor Technologies
Improving Cable Performance in Harsh Environments
Sponsored by Gore
Serial Fabrics Improve System Design
Sponsored by Pentek
Medical Capabilities Brochure
Sponsored by Nordson EFD
Selection of Materials for Medical Applications
Sponsored by RTP

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