#vna — Public Fediverse posts

Ein schönes Testboard für #VNA:
Filter, Diff, Match, open, stub, ...

https://github.com/antmicro/signal-integrity-test-board

https://openhardware.antmicro.com/boards/si-simulation-test-board/

#HF #RF #EMV #EMC

A 1990s VNA Gets An LCD https://hackaday.com/2026/01/10/a-1990s-vna-gets-an-lcd/ #VectorNetworkAnalyser #RadioHacks #lcd #vga #vna

Cool VNA calibration paper: Backward-Unknown-Thru. Instead of SOLR (which is just SOLT with an unknown adapter), in the Backward-Unknown-Thru, you measure a flush Thru at the near end of the test cables, and do two 1-port calibrations at the far end. The solved Unknown Thru will have a negative length, which is the "mirror image" of the test cable error. Great if the two far-end ports are really "far". Even better, you can measure the 2-port Thru first, before doing two 1-port calibrations, this way the cable movement error is absorbed into the error box. #electronics #vna

* J.-H. Kim, J.-S. Kang, J.-I. Park, and C.-H. Cho, “Backward Unknown-Thru calibration method,” in 2020 95th ARFTG Microwave Measurement Conference (ARFTG), Aug. 2020, pp. 1–3. 10.1109/ARFTG47271.2020.9241362.

Sneak peek:

https://youtube.com/@fromconcepttocircuit

#sdr #plutosdr #vna #sa #python

Homemade VNA Delivers High-Frequency Performance on a Budget https://hackaday.com/2025/04/16/homemade-vna-delivers-high-frequency-performance-on-a-budget/ #vectornetworkanalyzer #testequipment #ToolHacks #fpga #adc #vna #RF

Homemade VNA Delivers High-Frequency Performance on a Budget - With vector network analyzers, the commercial offerings seem to come in two flavor... - https://hackaday.com/2025/04/16/homemade-vna-delivers-high-frequency-performance-on-a-budget/ #vectornetworkanalyzer #testequipment #toolhacks #fpga #adc #vna #rf

PCB Dielectric Constant Measurements, Three Ways https://hackaday.com/2025/02/25/pcb-dielectric-constant-measurements-three-ways/ #permittivity #dielectric #timedomain #microwave #resonance #stripline #PCBHacks #vna

Изучаем Analog Discovery 2: снимаем АЧХ фильтра шаг за шагом

Мне нужно было снять АЧХ фильтра в схеме измерения тока на основе дифференциального усилителя. Требование — ≥3 dB ослабление на частоте 1 kHz. Однако имеющийся в распоряжении лабораторный спектроанализатор с векторным анализатором не подошел, так как измеряет s-параметры только от 2 MHz. Для решения задачи я использовал Analog Discovery 2 (сокращенно AD2) от Digilent — универсальный инструмент для тестирования и анализа сигналов. Я настоятельно рекомендую его инженерам. В нашей компании он появился благодаря директору, который активно интересуется новинками в электронике. Digilent на смену AD2 уже вывели на рынок Analog Discovery 3 , но они взаимозаменяемы, поэтому инструкция подойдет и для AD3. В этой статье я покажу, как использовать AD2 для построения АЧХ фильтра. Уверен, что эта инструкция будет полезна и познакомит вас с возможностями устройства. Для выполнения задачи я буду использовать векторный анализатор цепей (VNA), который позволяет увидеть, как схема реагирует на входные сигналы разной частоты. Векторный анализатор тестирует цепь, подавая на нее сигнал, и измеряет, как она его меняет.

https://habr.com/ru/articles/881466/

#электроника #analog_discovery #vna #векторный_анализатор #ачх #цифровая_обработка_сигнала #аналоговая_электроника #diy #petпроект #фильтр_нижних_частот

Making Sure Your Patch Cables Are Ready for RF Work https://hackaday.com/2025/01/08/making-sure-your-patch-cables-are-ready-for-rf-work/ #time-domainreflectometry #radiofrequency #RadioHacks #Patchcable #coaxial #testing #tdr #vna #RF

Making Sure Your Patch Cables Are Ready for RF Work - How do you know that your patch cables are good? For simple jumper wires, a multim... - https://hackaday.com/2025/01/08/making-sure-your-patch-cables-are-ready-for-rf-work/ #time-domainreflectometry #radiofrequency #radiohacks #patchcable #coaxial #testing #tdr #vna #rf

Antenna Measurement in Theory and Practice https://hackaday.com/2024/12/06/antenna-measurement-in-theory-and-practice/ #RadioHacks #antenna #4nec2 #NEC #vna

Antenna Measurement in Theory and Practice - If you want to analyze an antenna, you can use simulation software or you can buil... - https://hackaday.com/2024/12/06/antenna-measurement-in-theory-and-practice/ #radiohacks #antenna #4nec2 #nec #vna

VNAs and Crystals https://hackaday.com/2024/12/06/vnas-and-crystals/ #oscillator #ToolHacks #crystal #Parts #vna

VNAs and Crystals - Oscillators may use crystals as precise tuned circuits. If you have a vector netwo... - https://hackaday.com/2024/12/06/vnas-and-crystals/ #oscillator #toolhacks #crystal #parts #vna

A Lesson in RF Design Thanks to This Homebrew LNA https://hackaday.com/2024/11/04/a-lesson-in-rf-design-thanks-to-this-homebrew-lna/ #lownoiseamplifier #Noisefigure #RadioHacks #satellite #bandpass #biastee #PGA-103 #LRPT #LNA #vna

A Lesson in RF Design Thanks to This Homebrew LNA - If you’re planning on working satellites or doing any sort of RF work where the si... - https://hackaday.com/2024/11/04/a-lesson-in-rf-design-thanks-to-this-homebrew-lna/ #lownoiseamplifier #noisefigure #radiohacks #satellite #bandpass #biastee #pga-103 #lrpt #lna #vna

Understand Your Tools: Finger Exercises https://hackaday.com/2024/04/06/understand-your-tools-finger-exercises/ #HackadayColumns #oscilloscope #dipmeter #hamradio #Rants #tools #vna

Understand Your Tools: Finger Exercises - A dip meter is basically a coil of wire that, when you excite it, you can use to t... - https://hackaday.com/2024/04/06/understand-your-tools-finger-exercises/ #hackadaycolumns #oscilloscope #dipmeter #hamradio #rants #tools #vna

A NanoVNA as a Dip Meter - A staple of the radio amateur’s arsenal of test equipment in previous decades was ... - https://hackaday.com/2024/04/03/a-nanovna-as-a-dip-meter/ #griddiposcillator #radiohacks #radio #vna

A NanoVNA as a Dip Meter https://hackaday.com/2024/04/03/a-nanovna-as-a-dip-meter/ #griddiposcillator #RadioHacks #radio #vna

People are still asking me about making and selling the 7 turn helix. I'm undecided.
This one is off Alibaba. Full details on my site (and here) once I get some #SDR, #VNA #Inmarsat time with it. Main difference is the 3D is 0.5 spacing, this is 1.0. I'm worried about hi gain.

The internal reference from the VNA differs. Therefore my measurement of the crystal is not entirely correct and is always slightly off. I have to correct that first.
#vna #hp5334a

Resonance measurement of a quartz crystal with a vector network analyzer. Use the S21 with MAG and phase. The crystal is resonant at 14,313 MHz.

#rohdeschwarz #zvre #vna #hp

I have recently calibrated the R&S ZVRE. I now check the results with a PBF for ADSB 1090 MHz.
Very good results. 😁

#vna #rohdeschwarz #hp #vectornetworkanalyzer

Evening relaxation on the Rohde & Schwarz Vector Network Analyzer ZVRE 50.

Who has experience with firmware upgrades on the ZVRE?

#zvre #vna

Vector Network Analyzer Demo and Teardown - [Kerry Wong], ever interested in trying out and tearing down electrical devices, d... - https://hackaday.com/2023/10/18/vector-network-analyzer-demo-and-teardown/ #vectornetworkanalyzer #toolhacks #teardown #vna

I've started making a thing. It's far from finished, but at least it's starting to take shape. Also, I think that #RigExpert's AA-30.ZERO is a nice VNA in affordable price that is extremely hackable. After I've started playing with it on a PC I've thought that it would be even better to connect it to a ESP-based board so I can provide the measurements over wifi instead of an Arduino working only as a serial repeater - but maybe I'll get to that later.
#hamradio #vna #swr

The Dipole Antenna Isn’t as Simple as it Appears - Dipole antennas are easy, right? Just follow the formula, cut two pieces of wire, ... - https://hackaday.com/2023/08/16/the-dipole-antenna-isnt-as-simple-as-it-appears/ #radiohacks #wavelength #bandwidth #frequency #impedance #resistive #reactive #antenna #dipole #vna

@retr0id I use an A-to-A #USB cable with my #AEA Technology VIA Echo #VNA and Spectrum Analyzer. It's probably not a great design approach, but it works.

NanoVNA Tests Antenna Pattern - When [Jephthai] wanted to build his own Yagi antenna, he turned to MMANA software for antenna mode... more: https://hackaday.com/2020/01/11/nanovna-tests-antenna-pattern/ #wirelesshacks #toolhacks #antenna #nanovna #mmana #vna

Fail of the Week: Ambitious Vector Network Analyzer Fails To Deliver - If you’re going to fail, you might as well fail ambitiously. A complex project with a lot of subsy... more: https://hackaday.com/2019/12/31/fail-of-the-week-ambitious-vector-network-analyzer-fails-to-deliver/ #vectornetworkanalyzer #failoftheweek #harmonics #ad8302 #filter #thesis #fotw #vna #rf

Hackaday Links: September 1, 2019 - The sun may be spotless, but that doesn’t mean it isn’t doing interesting things. A geomagnetic st... more: https://hackaday.com/2019/09/01/hackaday-links-september-1-2019/ #vectornetworkanalyzer #geomagneticstorm #hackadaycolumns #hackadaylinks #hurricane #satellite #sunspots #amateur #aurora #emcomm #noaa15 #storm #ham #vna

NanoVNA is a $50 Vector Network Analyzer - There was a time when oscilloscopes were big and expensive. Now you can get scopes of various size... more: https://hackaday.com/2019/08/11/nanovna-is-a-50-vector-network-analyzer/ #vectornetworkanalyzer #toolhacks #antenna #signals #vna