Articles

Beyond the Box: A Software-Defined Approach to RF Testing

The traditional engineering re sponse to testing a new wireless standard often involves selecting a box instrument with the closest specifications. For automated test systems with multiple test requirements, this approach usually results in a different box for each measurement requirement in the system. When the test requirements are uniform and non-changing, this method may be sufficient, but it becomes cumbersome, slow, and ultimately more expensive for testing today’s complex radio frequency (RF) devices, which often use multiple wireless standards. A software-defined approach is ideal for automating RF verification, validation, and production tests, while traditional RF box instruments continue to play an important role on the design bench.

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$32 Million Initiative to Expand Hydropower

U.S. Department of Energy Secretary Steven Chu announced up to $32 million in Recovery Act funding, which is designed to support the deployment of hydropower turbines and control technologies to increase power generation and environmental stewardship at existing non-Federal hydroelectric facilities.

Posted in: News, Articles, Hydroelectric Power, Renewable Energy, Government Initiatives

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Measuring LED and Solid State Lighting Performance

Light emitting diodes (LEDs) and solid state lighting (SSL) products that incorporate LEDs pose many measurement challenges compared with other lighting elements, such as traditional tungsten and fluorescent. Advanced optical radiation measurement equipment and new techniques are often required to determine basic photometric and colorimetric parameters for LEDs and SSL products.

Posted in: Features, Articles, Energy Efficiency

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Advancing Technologies Harness the Power of Wind, Water, and the Sun

Renewable energy will be the world’s fastest-growing source of electricity generation over the next two decades, although it will still make up a relatively minor portion of the global energy supply, according to the Energy Information Administration. The majority of that increase will come from the use of wind power and water power, or hydropower.

Posted in: Features, Articles, Hydroelectric Power, Renewable Energy, Solar Power, Wind Power

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Advancing Technologies Harness the Power of Wind, Water, and the Sun

Renewable energy will be the world’s fastest-growing source of electricity generation over the next two decades, although it will still make up a relatively minor portion of the global energy supply, according to the Energy Information Administration. The majority of that increase will come from the use of wind power and water power, or hydropower. The Obama Administration advocates a policy that would require 25% of United States electricity demand be met by renewable energy by 2025.

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Advanced Technologies Will Help Hubble Yield More Remarkable Discoveries

The fourth servicing mission (SM-4) for the Hubble Space Telescope (HST) offered an impressive and unprecedented set of advanced technologies that may yield the most remarkable discoveries and imaging to date of Earth, the solar system, and beyond. The mission was, according to Deputy Associate Director for the HST Development Project Frank Cepollina, “the most complicated mission – from a servicing perspective – that NASA has ever flown.”

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Wafer Level Camera Technology

Film cameras were traditionally manufactured by discrete assembly, which means each component was fabricated as an individual item, tested if necessary, and then assembled into the final working product. The advent of solid state imaging did little to change this approach. The film was merely replaced by a light-sensitive electronic component. The only significant change was that the mechanical shutter was rendered obsolete and its action generated electronically within the imager die.

Posted in: Articles, Features, ptb catchall, Photonics

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