Collaborate Disseminate
If you want to analyze an antenna, you can use simulation software or you can build an antenna and make measurements. [All Electroncs Channel] does both and show you how …read more Continue reading Antenna Measurement in Theory and Practice
Oscillators may use crystals as precise tuned circuits. If you have a vector network analyzer (VNA) — or even some basic test equipment — you can use it to learn …read more Continue reading VNAs and Crystals
If you’re planning on working satellites or doing any sort of RF work where the signal lives down in the dirt, you’re going to need a low-noise amplifier. That’s typically …read more Continue reading A Lesson in RF Design Thanks to This Homebrew LNA
A dip meter is basically a coil of wire that, when you excite it, you can use to tell if something inside that coil is resonating along. This lets you …read more Continue reading Understand Your Tools: Finger Exercises
A staple of the radio amateur’s arsenal of test equipment in previous decades was the dip meter. This was a variable frequency oscillator whose coil would be placed near the …read more Continue reading A NanoVNA as a Dip Meter
[Kerry Wong], ever interested in trying out and tearing down electrical devices, demonstrates and examines the SV 6301a Handheld Vector Network Analyzer. He puts the machine through its paces, noting …read more Continue reading Vector Network Analyzer Demo and Teardown
Dipole antennas are easy, right? Just follow the formula, cut two pieces of wire, attach your feedline, and you’re on the air. But then again, maybe not. You’re always advised …read more Continue reading The Dipole Antenna Isn’t as Simple as it Appears
NFC tags are a frequent target for experimentation, whether simply by using an app on a mobile phone to interrogate or write to tags, by incorporating them in projects by …read more Continue reading NFC Performance: It’s All In The Antenna
Those of us who have bought cheap TinyVNA devices for our RF experimentation will be used to the calibration procedure involving short-circuit, 50 Ω, and open terminations, followed by a …read more Continue reading Calibrating a VNA The Proper Way
There was a time when a Vector Network Analyser or VNA was the type of instrument that cost as much as a very fancy car or even a small house. …read more Continue reading LibreVNA Is A Quality Open Hardware Vector Network Analyser