By Timothy Hegarty, Applications Engineer, Texas Instruments This article compares electromagnetic compatibility (EMC) requirements in automotive, industrial and defense product family standards, specifically various test parameters, test equipment, test setups and test methods for radiated emissions (REs). Much like the treatment of conducted emissions [1] in part 1 of this two-part article series, the […]
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One Fine Mesh: Wi-SUN in M2M communications
The Wi-SUN standard is a candidate for infrastructure networks that demand high bandwidth, low latency, and power efficiency. Soumya Shyamasundar • Silicon Labs The smart city movement is strongly connected to sustainability. It encompasses optimized management of energy resources, resilient infrastructure to improve quality of life, and access to public safety. Efficient use of available […]
From the lab to the real-world: DPA attacks in the wild
State-of-the-art countermeasures help make IoT products bullet-proof to ever-improving power analysis attacks. Marius Munder • Silicon Labs There’s a growing focus on security among manufacturers of IoT products, driven in part by how high-profile attacks affect buyer behavior. When an attack or data breach makes headlines, regardless of its actual severity, consumer confidence erodes, and […]
Using optical fibers for temperature measurement, Part 3: Variations
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages and implementation limitations. The previous part of this article looked at two approaches to using optical fibers for temperature sensing based on the fiber Bragg grating (FBG) and the Mach-Zehnder interferometer (MZI). […]
The difference between an electrometer and a Geiger counter
In 1895 William Roentgen observed X-rays although he could not explain their mechanism. The following year Henri Becquerel demonstrated that certain compounds of uranium emitted radiation that resembled X-rays. He showed this activity differed from the phenomenon of phosphorescence. The radiation seemed to be emitted continuously from the uranium. Did this violate the well-known principle […]
Using optical fibers for temperature measurement, Part 2: Principles
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages but also implementation limitations. The first part of this article discussed general issues of sensing of physical parameters, especially temperature, and total internal reflection in optical fibers. This section will look at […]
Keeping the noise down
Compact nanocrystalline single-phase filters that suppress electromagnetic interference from the power provide engineers with greater design flexibility. In our increasingly connected world, we are ever more dependent on electronic equipment and devices and the semiconductors contained within. It is perhaps no surprise, then, to find that demand for components that can manage electromagnetic interference (EMI) […]
USB proliferation of capabilities and compatibilities
USB4 represents a significant change from past standards from the USB Implementers Forum (USB-IF). USB4 is based on the Thunderbolt 3 protocol. Support of Thunderbolt 3 interoperability is required on all ports for USB4 docks. It is required for downward-facing ports on hubs and is optional for USB4 hosts and peripheral devices. Like Thunderbolt, USB4 […]
Worst suspicions confirmed: The terrible security of internet routers
Leland Teschler, Executive Editor Here’s the latest IoT security nightmare: All of the wireless routers through which most IoT traffic passes are probably vulnerable to botnets and other kinds of security breaches. That’s the conclusion of researchers at Fraunhofer FKIE in Germany who analyzed 127 different routers sold by seven vendors. The routers they examined […]
Using optical fibers for temperature measurement, Part 1: Context
Among the many ways to sense temperature, combinations of advanced optical principles used with optical fibers offer very different approaches, with application advantages and implementation limitations. Temperature is the most widely sensed physical parameter; it’s that simple. What’s not simple is the many ways we have of measuring it through the use of sensors such […]