network analyzer

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작성자스토크 조회 2회 작성일 2022-01-04 18:21:14 댓글 0

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#312: Back to Basics: What is a VNA / Vector Network Analyzer

This video presents the basic definition of a vector network analyzer (VNA), a practical view of how some of the measurements are performed, and an introduction to some of the common measurements that are made. A few examples VNAs are shown. Knowledge of transmission lines, reflections, VSWR, etc. is helpful, but not required for this video. Here are several additional video links that may be helpful:
Directional Coupler videos:
https://www.youtube.com/watch?v=iBK9ZIx9YaY
https://www.youtube.com/watch?v=byF1FLdbUiA
Transmission lines, reflections, and standing wave videos:
https://www.youtube.com/watch?v=g_jxh0Qe_FY
https://www.youtube.com/watch?v=M1PgCOTDjvI
Smith Chart videos:
https://www.youtube.com/watch?v=TsXd6GktlYQ
https://www.youtube.com/watch?v=ImNRca5ecF0
Notes from this video:
http://www.qsl.net/w2aew/youtube/what_is_a_VNA.pdf
LiveFreeAndShoot : Thank you so much for demystifying VNAs for me. I never knew what they really did as Google's explanation wasn't really helpful, as you pointed out. A great video as always. I know how much effort there is in turning out videos, the work you do is greatly appreciated!
Chris Abad : Your videos are extremely good Alan and I look forward to every one. I'm glad you are providing some introductory content on VNA's - I'm just starting to venture more into them...Perfect timing!
Shawn Hood : As an engineer, rather tinkerer, well outside of the RF (and even electrical) world, this is fantastic stuff. Undergraduate introductions to impedance (admittance), inductance, etc. are often too academic and woefully off-bench. I appreciate you bringing these oft-overcomplicated topics closer to a more observable physical domain on the scope -- and doing so at first mention. It's almost as if this stuff should just... make sense.
Bob Solimeno : Excellent introduction to how a VNA works! I purchased the NanoVNA last fall and really like all that can be done with this very inexpensive instrument for amateur radio. Thank you Alan!
Research and Build : I bought a NanoVNA and it is amazing. It has allowed me to accurately measure inductors that i have wound ( many were quite off supposeded calculated value) as well as tune antennas easily. It has been worth every penny for sure.

How to set up and perform network analyzer measurements with the R&S ZNL vector network analyzer

This video introduces the R\u0026S®ZNL vector network analyzer and demonstrates how easy it is to set up a basic network analysis measurement and how to store this setup for recall at a later time. The R\u0026S®ZNL combines network analysis, spectrum analysis and power measurement in one instrument.
More: https://www.rohde-schwarz.com/product/ZNL
Santosh Gurral : Please make a video showing how to measure Impedance plot(Z vs Freq)of a capacitor using the two-port method
Observ45er : It seems strange to measure an antenna as S22 since it is a one port network. That threw me for a second.
Sachin Singh : beautiful equipment that siglent cant copy
Pravin Sharma : very nice eqpt
TAKAO PV8TAK : Show!!!

tinySA Spectrum Analyzer review (Banggood)

Tiny Spectrum Analyzer: https://bit.ly/34FJU6k
Coupon: BGdc1ff0
Banggood Spring Sale: http://bit.ly/3bKH6Jy
Banggood Spring Sale News: https://bit.ly/3sdUUCg
Other Spectrum Analyzers: http://bit.ly/3sc7wcL
Download Banggood APP to get an extra 10% off: https://banggood.app.link/wfM1jBYUZdb
Manufacturer's website: https://www.tinysa.org/wiki/

The tinySA is a small spectrum analyzer, primarily intended for 0.1MHz to 350MHz input but it has some nice other capabilities:

- Spectrum Analyzer with two inputs, high quality MF/HF/VHF input for 0.1MHZ-350MHz, lesser quality UHF input for 240MHz-960MHz.
- Switchable resolution bandpass filters for both ranges between 2.6kHz and 640kHz
- Color display showing 290 scan points covering up to the full low or high frequency range.
- Input Step attenuator from 0dB to 31dB for the MF/HF/VHF input.
- When not used as Spectrum Analyzer it can be used as Signal Generator, MF/HF/VHF sinus output between 0.1MHZ-350MHz, UHF square wave output between 240MHz-960MHz.
- A built-in calibration signal generator that is used for automatic self test and low input calibration.
- Connected to a PC via USB it becomes a PC controlled Spectrum Analyzer
- Rechargeable battery allowing a minimum of at least 2 hours portable use
- Max input level +10dBm. Do not destroy your tinySA
- Due to the low cost and very small form factor there are certain relevant limitations.


#tinySA #SpectrumAnalyzer #Banggood
Michael Fuchs : Thank you for the review Paul!
I had both a Tiny SA and Nano VNA on my 'wishlist' but last Friday my only radio died so I guess I don't have to think that hard about it at the moment...
John Cunliffe : There are 2 input modes, low and high. the low input goes to 350Mhz, the high input goes to 960Mhz. The unit can also be used as a very precise signal generator. Go to the tinySA web page at tinysa.org to find out more. Research BEFORE making a video goes a long way.
DrHWO : Nice video, Paul. Have you had a chance to hook it up to a transceiver yet to look at how clean the output is? Do you need a set of attenuators to do this safely? 73, M0YZT
Olaf Menzel : It seems to be similar to the NanoVNA but is very different and has more options than the NanoVNA. But the NanoVNA is more common.
valveman12 : Thank you for the great review. I just got mine yesterday and have not tried it yet so this video was very helpful...

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#network analyzer

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