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dB or not dB? Everything you ever wanted to know about decibels but were afraid to ask...

True or false: 30 dBm + 30 dBm = 60 dBm? Why does 1% work out to be -40 dB one time but then 0.1 dB or 0.05 dB the next time? These questions sometimes leave even experienced engineers scratching their heads. Decibels are found everywhere, including power levels, voltages, reflection coefficients, noise figures, field strengths and more. What is a decibel and how should we use it in our calculations? This Application Note is intended as a refresher on the subject of decibels.

Posted in: White Papers, White Papers

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Antenna Basics

This white paper describes the basic functionality of antennas. Starting with Hertz's Antenna model followed by a short introduction to the fundamentals of wave propagation, the important general characteristics of an antenna and its associated parameters are explained.

Posted in: White Papers, White Papers

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How to Select an Analog Signal Generator

Today’s microwave and wireless communications market is expanding at an incredible rate. Along with this growth comes an increasing need for test equipment, such as an analog signal generator, that can help verify the performance of devices and systems.

Posted in: White Papers, White Papers

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The Fast Guide to Protecting COTS Electronics with Conformal Coatings: The Basics of Acrylic, Silicone, Urethane and Parylene Conformal Coatings

Commercial off-the-shelf (COTS) electronics are used frequently for military and aerospace applications. They need to provide unquestionable performance, operating without fail under often extreme, severe, and rugged circumstances for extended periods of time. Some COTS applications that demand solutions superior to normal use are:

Posted in: White Papers, White Papers, Coatings & Adhesives

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New Fluid Makes Geothermal Power Cleaner

More American homes could be powered by the Earth's natural underground heat with a new, nontoxic, and potentially recyclable liquid that is expected to use half as much water as other fluids used to tap into otherwise unreachable geothermal hot spots. The fluid might be a boon to a new approach to geothermal power called enhanced geothermal systems. These systems pump fluids underground, a step that's called "reservoir stimulation," to enable power production where conventional geothermal doesn't work.

Posted in: News

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Smart Tablet Controls Swarms of Robots

Using a tablet and a red beam of light, researchers at Georgia Tech have created a system that controls a fleet of robots with the swipe of a finger. A person taps the tablet to control where the beam of light appears on a floor. The swarm robots then roll toward the illumination, constantly communicating with each other and deciding how to evenly cover the lit area. When the person swipes the tablet to drag the light across the floor, the robots follow. If the operator puts two fingers in different locations on the tablet, the machines will split into teams and repeat the process.

Posted in: News

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Handheld Tools Perform Tasks Based on User’s Motions

What if handheld tools knew what needs to be done and were even able to guide and help inexperienced users to complete jobs that require skill? Researchers at the University of Bristol (UK) have developed a novel concept in robotics: intelligent handheld robots.

Posted in: News

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