EE World interviewed Microchip’s David Chandler and Duke Buckner on the status and future of GPS, a technology we rely on for location tracking and network timing. Ethernet isn’t the only ubiquitous technology invented in 1973. GPS, the network of satellites that provide location and timing information, was also born that year. GPS has come…
FAQ
Why does the Fourier transform provide apparently inaccurate results, and what can I do about it? Part 3
Windowing functions account for mismatches between an input signal and FFT sample size. We concluded part 2 of this series with a look at fast Fourier transforms (FFTs) of 39.1-Hz and 38.12-Hz cosine waves, with our sample size N = 512 and our sample interval Δt = 1 ms (Figure 1). Shouldn’t the amplitudes of […]
What sensors are used to monitor volcanoes?
Monitoring volcanoes is complex, and it’s an important activity to ensure public safety in many areas of the world. It involves monitoring ground deformations, earthquakes and vibrations, volcanic gas, rock and water chemistry, and remote sensing from satellites. Volcano monitoring needs to be implemented on a continuous basis or in near-real-time and is an extreme […]
Why does the Fourier transform provide apparently inaccurate results, and what can I do about it? Part 2
A bare-bones implementation of the Fast Fourier Transform helps illuminate how to extract frequency information from input data samples. In part 1 of this series, we reviewed the discrete Fourier transform (DFT) and manually calculated one DFT shown in Table 1. Table 1. Manual DFT results DFT input Complex DFT |DFT| 3 12 + j0 […]
What are the different types of circuit simulation?
Electronic engineers use advanced simulation tools to create virtual representations of complex electronic circuits. These ‘digital twins’ streamline the circuit design process, accurately modeling silicon behavior and performance before physical fabrication. This article reviews the three primary circuit simulation categories: analog, digital, and mixed. It also discusses different simulation levels, such as block and chip, […]
Why does the Fourier Transform provide apparently inaccurate results, and what can I do about it? Part 1
This multipart series will review the discrete Fourier Transform and describe how to avoid common problems when transitioning from the time to frequency domain. A recent post on phase noise discussed expressing a function of time as a function of frequency. The Fourier Transform is the well-known road from the time domain to the frequency […]
How is AI enabling the decarbonization of the utility grid?
The electrification of transportation, Industry 4.0, communications, agriculture, and other industries compliments the decarbonization of the utility grid to meaningfully reduce Co2 emissions. Integration of renewable energy sources will be a key to decarbonization of the grid, and artificial intelligence (AI) and machine learning (ML) will be used to enable wider integration of renewable energy. […]
How do micro photo sensors work and what are they used for?
Micro photo sensors have built-in amplifiers and are available in a variety of configurations, with modulated, non-modulated, and polarized light beams. They’re used to provide precise and stable sensing or positioning of materials, components, or assemblies. Some have integrated connectivity, like IO-Link and IP 67 environmental ratings. Uses for micro photo sensors include precision manufacturing […]
Reconfigurable intelligent surfaces: what, why, where, and how?
Metamaterial arrays allow the wireless medium and path to be “adjusted” to compensate for its many imperfections and changes.
What are e-bikes?
In this article, we’ll explore the types of e-bikes available and their features. In terms of e-mobility, e-bikes stand out as a compact, affordable option for many.