June 2020

Ever tried to measure low-level signals in the presence of noise? Or wanted to capture a measurement isolated from ground, like that of an ungrounded hand-held digital multi-meter, but also needed to capture finer details of the signal, like those captured with an oscilloscope?

This two-article series is devoted to a dipole family of antennas used in EMC testing: half-wave dipole, quarter-wave monopole, log-periodic, and biconical antenna.

OEMs are moving toward the digitalization of the design and integration of electrical and electronic systems in aerospace applications. This approach to design development may help aerospace OEMs avoid possible calamities in the future.

This article analyzes the V-I characteristic of a varistor and shows it is more appropriate to treat the varistor as a current dependent resistance rather than the conventionally taught voltage dependent resistance. Spice circuit examples are given, based on a current dependent resistance varistor model.

Wireless devices are now in the legislative spotlight the world over. Safety, performance, spectrum usage and protection of personal data are all matters of regulation, although countries vary in how they regulate such concerns. This article looks at Australia as a case study, reviewing the overarching legal framework, the role of the national regulator, conformity assessment and the use of standards.

South Korea has several mandatory product certifications covering many different product categories. The most important one is the KC certification, which applies to a large variety of products and is comprised of different certification modes.

With the advent of wide-spread wireless electronics, the need for high-performance RF components to be built into highly reliable and robust products continues to expand.

The Banana Skin columns were compiled by Keith Armstrong, of Cherry Clough Consultants Ltd, from items he found in various publications, and anecdotes and links sent in by the many fans of the column.