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phase noise analyzer and phase noise measurement

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switchabl:
That is a spectrum analyzer, it does not perform cross-correlation phase noise analysis. And it doesn't even have particularly low PN. The difference in sensitivity is on the order of 50 dB (!). I know many value the support you provide for Siglent products here. But I do wish that sales people everywhere would just learn to say "sorry, we don't have that" instead of automatically trying to sell you something that is obviously unsuitable.

The Keysight E505xA series is another turn-key microwave phase noise measurement system. It is also extremely expensive. The cheapest option would probably be the older E5052A. I'd expect a used 7 GHz model to be somewhere in the same ballpark as a new 53100A.

3apw:

--- Quote from: drew23 on February 27, 2024, 04:45:29 am ---The only phase noise analyser that is completely self-contained for GHz measurements is the R&S FSPN.

--- End quote ---

•   AnaPico   
https://www.anapico.com/products/phase-noise-analyzers/apph-models-up-to-40-ghz/
APPH  - Fully Integrated Cross-Correlation Phase Noise Analyzer from 1 MHz to 7 / 26 / 40 GHz

•   Berkeley Nucleonics
https://www.berkeleynucleonics.com/phase-noise-testers
Model 7000 Series :  to 7 / 26 / 40 /50 /65 GHz  Phase Noise Tester - Signal Source Analyzer

•   Holzworth Instrumentation
https://holzworth.com/products/phase-noise-analyzers
HA7062 SERIES PHASE NOISE ANALYZERS : to 6 / 26 / 40 GHz

•   Keysight Technologies
N5511A : to 40 GHz
E505XA  : to 26 / 44 / 54 GHz

•   NoiseXT
https://noisext.com/solutions/phase-noise-analyzer/
PN9000 : to  1.8 / 6 / 40 / 140 GHz
NXA-6  : to  6 / 26 / 50 GHz
DCNTS  : to 50 GHz

•   Rohde&Schwarz   
https://www.rohde-schwarz.com/products/test-and-measurement/phase-noise-analyzers_254899.html
FSWP : to 8/26.5/50 GHz
FSPN :  to 8 / 26.5 GHz
FSUP :  to 8 / 26 / 50 GHz

KE5FX:
Nice rock!  That's about the right noise floor for the 53100A, but I wonder where that artifact came from.  Normally you see that sort of thing if the DUT or one of the references is still warming up.  More typically you'd see something like this when measuring something below the unit's own spec floor:



(noise/spur responses near 1 Hz and 2 kHz are real)

Gerhard_dk4xp:
https://synergymwave.com/articles/2013/04/full_article.pdf

KE5FX:
The spurs shown at 4:30 do not originate in the PN test set, but are typical of the various CSAC models.  They aren't especially-well optimized for spectral purity, nor were they meant to be.  The major design goals for those parts are long-term stability and low power consumption.

E.g. if you do a Google image search for csac phase noise, you'll see a few references like this one that depict similar spurs with different instrumentation.  Unexpected spurious responses on the 53100A are often remedied by letting the measurement run a bit longer, but that's not an issue with the test shown in the video.

(Obligatory disclaimer: I work on the 53100A and related stuff, but I don't speak for Microchip.)

Edit: this was in response to a post that seems to have been deleted, which mentioned the spurious responses visible on a chip-scale atomic clock measurement in a 53100A demo video. 



Cool video, I hadn't seen it before. :)

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