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+ | ====== Phase/Frequency Measurement Methods ====== | ||
+ | |||
+ | //There was a thread about the Tight PLL method on the Time-Nuts mailing list. One useful outcome was this post by Tom Van Baak: | ||
+ | // | ||
+ | |||
+ | ---- | ||
+ | |||
+ | Here are a couple of really good articles that describe many methods of phase/frequency measurement, including TPLL.\\ | ||
+ | You'll see some nice "advantage/disadvantage" lists in several of these documents, which is why I'm posting the links. | ||
+ | |||
+ | Warren & Bruce, please look at the first five documents at least. | ||
+ | John too. Lots of TPLL info. This is all worth reading. I don't know why I didn't find some of these papers six months ago. | ||
+ | |||
+ | |||
+ | System Phase Noise Calculation and Measurement Techniques\\ | ||
+ | http://www.mpdigest.com/issue/Articles/2009/sept/spectrum/Default.asp\\ | ||
+ | -- short article, nice summary. | ||
+ | |||
+ | PN9000 Automated Phase Noise Measurement System Application Note #1\\ | ||
+ | http://www.aeroflex.com/ats/products/prodfiles/appnotes/12/app1.pdf\\ | ||
+ | -- see section 2; TPLL is section 2.2. | ||
+ | |||
+ | Oscillator Phase Noise Measurements using the Phase Lock Method\\ | ||
+ | http://ravoltek.net/dippa/dippa_rajala_olli.pdf\\ | ||
+ | -- TPLL, equations, graphs, error analysis, photos, schematics, parts list. | ||
+ | |||
+ | An investigation into the phase noise of quartz crystal oscillators\\ | ||
+ | http://etd.sun.ac.za/bitstream/10019/337/1/BentleyB.pdf\\ | ||
+ | -- see chapter 4 or at least section 4.3; TPLL is 4.3.3.2. | ||
+ | |||
+ | PN9000 Automated Phase Noise Measurement System Application Note #2\\ | ||
+ | http://smartdata.usbid.com/datasheets/usbid/2000/2000-q4/app2.pdf\\ | ||
+ | http://www.datasheetarchive.com/pdf/Datasheet-010/DSA00173368.pdf\\ | ||
+ | -- theory of operation, TPLL | ||
+ | |||
+ | |||
+ | A General Theory of Phase Noise in Electrical Oscillators\\ | ||
+ | http://www.chic.caltech.edu/Publications/general_full.PDF\\ | ||
+ | -- too deep for me. | ||
+ | |||
+ | Phase Noise Measurement. Using the Phase Lock Technique\\ | ||
+ | http://www.chem.duke.edu/~boris/datasheets/AN1639_phase_noise.pdf\\ | ||
+ | http://www.lansdale.com/Articles/an1639.pdf\\ | ||
+ | -- might be applicable. | ||
+ | |||
+ | Correlation-based phase noise measurements\\ | ||
+ | http://www.femto-st.fr/~rubiola/pdf-others/correl-report.pdf\\ | ||
+ | -- for John Miles | ||
+ | |||
+ | Practical Problems Involving Phase Noise Measurements\\ | ||
+ | http://tycho.usno.navy.mil/ptti/ptti2001/paper42.pdf\\ | ||
+ | -- also for John. | ||
+ | |||
+ | /tvb | ||