RF & Microwave Electronics

New Algorithm Reveals Underground Water Levels

Researchers from Stanford University have used satellite data and a new computer algorithm to gauge groundwater levels in Colorado’s San Luis Valley agricultural basin. The technique "fills in" underground water levels in areas where quality data had been previously unavailable.

Posted in: News, Visualization Software, Antennas

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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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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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Introduction into Theory of Direction Finding

Applications of direction finding While direction finding for navigation purposes (referred to as cooperative direction finding) is becoming less important due to the availability of satellite navigation systems, there is a growing requirement for determining the location of emitters as the mobility of communications equipment increases:

Posted in: White Papers, White Papers

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Spectrum Analyzer Fundamentals – Theory and Operation of Modern Spectrum Analyzers

This primer examines the theory of state-of-the-art spectrum analysis and describes how modern spectrum analyzers are designed and how they work. That is followed by a brief characterization of today's signal generators, which are needed as a stimulus when performing amplifier measurements.

Posted in: White Papers, White Papers

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Evolution of the Modern Receiver in a Crowded Spectrum Environment

The International Telecommunications Union Radiocommunications working group (ITU-R) outlines recommendations for the regulations and procedures for federal radio frequency management. This white paper takes a look at the evolution from the analog spectrum analyzer to the modern digital receiver in line with ITU-R Recommendations. It also gives some examples of the importance of the new architecture in today’s spectrum environment.

Posted in: White Papers, White Papers

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Army Equips Stryker Unit With New Communications Technology

The Army's Stryker vehicle, designed to quickly move soldiers into a combat zone, is swift and mobile. Now its communications equipment will be, too.

Posted in: News, Wireless

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