Differential-mode and common-mode currents can cause your product to produce radiated and conducted emissions. These three techniques can help you measure them.
Test and Measurement Tips
Optimize AI network design at 800 Gbps
Keysight Technologies, Inc. has entered the artificial intelligence (AI) and machine learning (ML) infrastructure ecosystem with the introduction of the Keysight AI Data Center Test Platform, designed to accelerate innovation in AI / ML network validation and optimization. The solution significantly improves the benchmarking of new AI infrastructures with unprecedented scale and efficiency. The deployment and […]
5G RF, radio tester cuts bench and production floor footprint
Rohde & Schwarz has developed two additions for its R&S TS8980 family: the R&S TS8980S-4A and the RS TS8980FTA-3A.
Keysight, Intel certify EM simulation for 18A process technology
Keysight Technologies, Inc. announces that the RFPro electromagnetic (EM) simulation software, part of the Keysight EDA Advanced Design System (ADS) integrated tool suite, is now certified by Intel Foundry for design engineers targeting Intel 18A process technology. The new EM simulation capability, together with process design kits (PDKs) for the Intel 18A circuit and physical designs, enables radio frequency integrated circuit (RFIC) […]
Why does the Fourier transform provide apparently inaccurate results, and what can I do about it? Part 4
The FFT can measure phase angle, but what appears to be a meaningful result might just be the arctangent of a ratio of rounding errors. Throughout this series, we reviewed the fast Fourier transform (FFT) as implemented in Microsoft Excel and investigated windowing functions. In this final part, we’ll cover phase measurements, but first, let’s […]
Wi-Fi 7 approaches, now comes the testing
Keysight’s E7515W lets you test Wi-Fi 7 chipsets and systems.
Review: Electronic bug and hidden camera detectors
Do you want assurance that cameras embedded in everyday devices don’t spy on you? Then you should check for cameras, SD card slots, and Wi-Fi-connections. We reviewed two devices that help to find those lurking spies. While discovering a hidden camera in an Airbnb, VRBO, or hotel is rare, there have been reports of travelers […]
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 […]
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 […]
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 […]