Optical wireless communications in the form of “Li-Fi” is a technical alternative to RF-based Wi-Fi with distinct strengths and weaknesses. You are undoubtedly familiar with Wi-Fi – a contraction of “Wireless Fidelity”– which has become the de facto standard for wireless connectivity between the Internet or local area networks and PCs, smartphones, countless appliances, gadgets, […]
FAQ
What is passive intermodulation?
Passive intermodulation (PIM) is a pernicious and destructive phenomenon for cellular network operators. PIM shows up as a set of unwanted signals created by mixing two or more strong RF signals. Mixing generally produces the sum and difference frequencies of the two transmit signals F1 and F2. These signals are F1 + F2 and F1 […]
Private 5G networks unlock IoT applications
As more industries rely on wireless devices, sensors, and artificial intelligence to connect people and machines, private networks bring the potential to enable more advanced IoT applications while increasing security, bandwidth and speed.
SDR adds flexibility to communications systems
Software-defined radio addresses problems and limitations found in hardware-based radios, such as hardware obsolescence and rigidity.
Audio filters: Understanding acoustic waves – Part 2
In the previous tutorial, sound waves and their properties were discussed. Now, let’s learn about acoustic waves. Sound waves typically refer to frequencies that are audible to humans, which are in the 20 Hz to 20 kHz range. However, waves with frequencies that are greater than 20 kHz are ultrasonic waves. And, those in the […]
Delivering advanced face recognition capabilities at the edge
By Rick Bye, Senior Product Marketing Manager, NXP Using face recognition for access control The COVID-19 pandemic highlights concerns over how many different surfaces we often touch during a typical day. For example, everyone entering a secured building, such as a workplace or after-hours hotel entrance, touches access control keypads that present an ideal surface […]
How to design an effective telehealth system
By Marcel Consée, Mouser Electronics Healthcare can be deeply personal, and direct contact between patients and medical personnel remains vital. However, taking the relationship between doctors and nurses out of the equation can sometimes make sense. Medical crises such as the global COVID-19 pandemic accelerate the adoption of telehealth methods, even though the original idea […]
What is Wi-Fi HaLow? Players and future
Part 1 focused on HaLow technology; this part will explore who the major players are and discuss the future of the technology. Who are the major HaLow players? A few silicon startups are taking the lead in Wi-Fi HaLow rather than the traditional major chipmakers. They include Morse Micro, Newracom, Methods2Business (an IP provider), and […]
When to use NPN and PNP transistors and FETs
Most bipolar junction transistors and field-effect transistors (FETs) have three terminals. In the BJT symbol, the base lead is perpendicular to and lands at the midpoint of a short line segment representing the semiconductor substrate. The emitter has an arrowhead embedded in the lead, so the remaining lead has to be the collector. If the […]
What is Wi-Fi HaLow? Part 1
In the first part of this two-part series, we focus on Wi-Fi HaLow technology. Part two will explore who the major players are and discuss the future of the technology. What is HaLow? In 2017 the wireless networking standard IEEE 802.11ah, also called Wi-Fi HaLow (pronounced “HAY-Low”), was released. HaLow uses the 900 MHz industrial, […]