Hi Karl, Perhaps you have come across this but your query brought it to mind so I thought I'd pass it along in case it's interesting http://www.aholme.co.uk/PhaseNoise/Main.htm
Glenn On Tue, Aug 20, 2024, 13:37 Karl Warnick <warn...@ee.byu.edu> wrote: > Hi all, > > I've spent some time this summer as part of a radar project digging into > calculating phase noise for highly stable tones. I have implemented what > I think is a decent algorithm. My next steps are to look for test data > sets and tips for the hardware. > > Do you have a file of samples of a stable tone? If anyone has a test > data set consisting of samples of a pure tone that they would like to > share as a test data set, I'd like to apply my codes to that and check > the phase noise. Both the tone generator and the ADC sample clock should > be phase stable to the order of a Keysight signal generator, or ideally > better. The data set length should be a reasonable fraction of a second > for ~1 Hz phase noise resolution. The frequency of the tone and the > sample rate are fairly arbitrary as I'm mainly looking to benchmark the > algorithm. > > How cheaply can stable samples be acquired? I'm looking for low cost > hardware (a few $100s up to a few $k) that is stable enough to measure > phase noise comparable to a Keysight source or better. Phase noise can > be measured with an expensive phase noise analyzer, but I believe it > should be possible to do this with a low cost digitizer with a suitably > stable sample clock. The sample clock could (or perhaps must) be > external. The sample rate should be around 80-100 Msps or higher and the > platform should be able to store a burst of samples of length on the > order of 1 sec. We have done this using a ZCU 216 and it seems to work, > but that isn't really a low cost board. I've looked into Picoscope > products, which might be ideal, but their support people don't know > anything about the phase noise properties of their samplers. > > Thanks in advance to anyone whose interest is piqued enough to respond. > > Best, > Karl > > -- > Karl F. Warnick > Parkinson Engineering Research Professor > Department of Electrical and Computer Engineering > Brigham Young University > 450 Engineering Building > Provo, UT 84602 > (801) 422-1732 > > > > > > -- > You received this message because you are subscribed to the Google Groups " > casper@lists.berkeley.edu" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to casper+unsubscr...@lists.berkeley.edu. > To view this discussion on the web visit > https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/8839ddb3-83fd-40be-8a9d-c90ae6f9678e%40ee.byu.edu > . > -- You received this message because you are subscribed to the Google Groups "casper@lists.berkeley.edu" group. To unsubscribe from this group and stop receiving emails from it, send an email to casper+unsubscr...@lists.berkeley.edu. To view this discussion on the web visit https://groups.google.com/a/lists.berkeley.edu/d/msgid/casper/CAGK_ABfmWHQxEkkhfZZZymw_A7cf7MheYFz%3DYDduToEsjwHK2Q%40mail.gmail.com.
