Originally derided as scientifically erroneous, the Doppler effect is now a vital tool in all aspects of technology, ranging from microscopic to galactic. Doppler, back in the day – and now The explanation of the Doppler effect is almost intuitive to us, with our understanding of wave phenomena along with available frequency sources and measurement […]
FAQ
The Doppler effect: From highly ridiculed to absolutely indispensable, Part 1
Originally derided as scientifically erroneous, the Doppler effect is now a vital tool in all aspects of technology, ranging from microscopic to galactic. Engineers are familiar with many “effects” ranging from widely used ones such as the piezoelectric effect to somewhat lesser-known ones such as the RF skin effect and even less-familiar ones such as […]
What is PSRR and why is it important in op amps and LDOs?
The power supply rejection ratio (PSRR) describes the ability of a circuit to suppress any power supply variations from passing to its output signal and is typically measured in dB. It’s most often used with operational amplifiers (op amps), dc/dc converters, linear regulators, and low drop out regulators (LDOs). For op amps, the PSRR describes […]
Edge computing security: Challenges and techniques
By Rob Oshana, Vice President Software Engineering, Research and Development, Edge Processing at NXP Semiconductors In today’s connected world, a growing number of applications depend on embedded devices, collecting and acting upon data from a wide range of physical processes. As the computing power of the Systems-on-Chip (SoC) at the heart of these devices continues […]
Connector standard helps pave the way to the IIoT
A new universal connectivity standard will help bring Single-Pair Ethernet to the Industrial Internet of Things. Eric Leijtens, TE Connectivity The rise of the Industrial Internet of Things (IIoT) places new demands on industrial networks. With the increasing number of IIoT nodes, there’s a need for a simplified, economical communication infrastructure at the field level. […]
How coherent optics increase data rates
Modulation and polarization multiply data capacity on optical networks. In the beginning of optical networks, all optical signals were based on a simple mechanism known as on-off keying (OOK). In simple terms, this mechanism works by switching a light on and off to transmit data. OOK is a wider definition for representing whether data is…
Difference between a waveguide and transmission line
As electronics migrates to higher and higher frequencies, the media routing electronic signals to their intended destinations grow increasingly exotic. This is particularly true as communication technology moves to 5G frequencies which are characterized by millimeter wave transmissions. In this frequency range, engineers are more likely to encounter waveguides and transmission lines rather than ordinary […]
How can AI/ML improve sensor fusion performance?
Sensors are becoming ubiquitous as their price and availability continue to improve. However, sensor data is not that simple and is prone to noise and other interference. The complexities of sensor data have led to sensor fusion that aims to perform better than a single sensor by improving the signal-to-noise ratio, decreasing uncertainty and ambiguity, […]
How are sensors improving maritime navigation?
Of course, GPS is important, but radar and the automatic identification system (AIS) use various sensors to track and report on ship positions in real-time. Sensor fusion is being developed for autonomous shipping. And there are hydrophones combined with other sensors and artificial intelligence (AI) and machine learning (ML) to identify and track whale movements […]
What sensors do you need to land on the moon?
NASA is developing several sensor systems and algorithms for use on Artemis moon landings. It’s called the Safe and Precise Landing – Integrated Capabilities Evolution (SPLICE) technology suite. It consists of three primary elements: An inertial measurement unit (IMU) and a camera for terrain relative navigation. Second is Doppler LiDAR to determine the lander’s velocity […]