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From IEC to ISO

In this column, we'll explore how symbols migrate from IEC standards into ISO standards...

Engineering News

Life-sized human-shaped holograms (from our “You Can’t Make This Stuff Up” file)

As we enter the summer vacation season, travelers connecting through one of the metro...

Basics

Lightning Induced Ground Potential Rise (GPR)

Select the most suitable waveforms for evaluating equipment resistibility to lightning damage when a GPR is either the suspected source of the damage, or its effects are to be tested for.

Testing

Fifty-Year Old EMI Testing Problems Solved!

There have been inherent problems with audio frequency conducted susceptibility tests since their inception. Some issues are resolved using a novel but inexpensive transducer.

Testing

Single Antenna Measurement Using Gated Time Domain and The Mirror Method

This article provides a basis for using gated time domain and a highly reflective mirror to measure the gain, phase, beamwidth and radiation pattern of broadband antennas. The tests were completed using the Anritsu VectorStar VNA. The speed and data points (100,000) make possible high resolution in time domain. Three commercial reference horns were measured and an aperture and mirror conductivity correction applied. The resulting data agreed reasonably well with the published data. Two additional classical methods were also performed for validation.

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