The combination of high-date-rate WiFi with low-data-rate, transmit-once-in-a-while LoRaWAN can make numerous IoT applications practical. Rémi Lorrain • Semtech • LoRa Alliance • Wael Guibene • Charter Communications • LoRa Alliance • WBA IoT Work Group An intelligent multiple radio access network (multi-RAN) strategy for IoT is becoming increasingly important. A well-executed multi-RAN strategy can […]
FAQ
E-ink and the IoT
E-ink has the potential for delivering wireless color screens on IoT devices that consume little power. Bill Cheung, Orient Display Despite being conceived in the 1970s, e-ink only received wide recognition after the introduction of the Amazon Kindle in 2007. Other manufacturers had used the technology, but none had the practical elegance and reach of […]
What you should know about Thunderbolt 3, 4, 5 and USB
With Thunderbolt 3 well established, Thunderbolt 4 coming onto the market, and Thunderbolt 5 in the early stages of being defined, it’s important that designers understand the similarities and differences between the various flavors of Thunderbolt and how they compare and contrast with USB. Intel designed thunderbolt technology in cooperation with Apple to support new […]
A comparison of EMI test setups and specifications for automotive, industrial and defense applications, part 2: Radiated emissions
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 […]
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 […]
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 […]
