vna on Bald Engineer

WiFi-Enabled LED detector tells me when my Dehumidifier is Full!

Fri, 12 Apr 2024 23:40:13 +0000

I created a Wi-Fi-enabled LED Detector using Nordic’s nRF7002 Design Kit (DK). Using this box, I can detect when LEDs on appliances, like my lab’s dehumidifier, are on. In other words, my non-IoT tool can send me messages over the Internet now! And, because the nRF7002 has a dual-band Wi-Fi antenna, it does so on my 5 GHz network. I ran into a number of issues with this project, and I expected that. Except for the RF part of the design, which works fine! Links to the design files are available on the post on the element14 Community.

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Instrument Basics: Vector Network Analyzer (VNA) with PicoVNA | Workbench Wednesdays #49

Wed, 19 Jan 2022 00:15:00 +0000

Vector network analyzers (VNAs) measure how a “network” of components changes the amplitude and phase of signals. By measuring across a wide frequency range, VNAs can create S-Parameters that fully describe the behavior of a circuit. This video uses a PicoVNA 106 to show the basics of what a VNA measures, how they work, and a brief overview of how to use one. I made a mistake on the explainer graphic for S-parameters. The annoying thing is that I think it was a really good explanation!

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FPC1500 Review, a Rohde & Schwarz Spectrum Analyzer

Wed, 04 Apr 2018 13:00:15 +0000

Everyone’s first piece of test equipment should be a multimeter. Next is probably a power supply with current limiting. For many engineers, the next step is an oscilloscope. At least those working on digital electronics. Even if you are not working with RF, do not overlook a spectrum analyzer. The Rohde & Schwarz FPC1500 is three instruments in one: a Spectrum Analyzer, RF Signal Source, and a Vector Network Analyzer. In this post, I combine an FPC1500 review with an introduction to these frequency domain tools.