Rick wrote:
The faster the comparator, the greater its analog bandwidth. Thus there is more total noise to cause jitter. The DC to daylight comparator is the opposite of the John Dick (JPL) paper on zero crossing detectors in PTTI around 1990. John teaches that you use the MINIMUM bandwidth amplifier to square up a sine wave.
For Dick's paper, see: <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Zero_cross_detector_low_jitter_JPL_1990.pdf>The idea is clear from the block diagram, if you don't want to read the whole paper:
<http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Zero_cross_detector_JPL_block_diagram.pdf>Oliver Collins published a paper expanding on this idea ("The Design of Low Jitter Hard Limiters," 1996).
Attila wrote:
If anyone here has any good text to read on oscillator design, please let me know.
I concur with Rick's suggestions. I would also suggest Edson's 1953 text, "Vacuum-Tube Oscillators," which gives details on some concepts that are often glossed over in later texts:
<http://www.ko4bb.com/manuals/download.php?file=03_App_Notes_-_Proceedings/1_Design_Notes/Vacuum-Tube_Oscillators_EDSON_1953.pdf> Here is a selection of others I have found useful: <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/High_Stability_Bridge_Balancing_Oscillator_Sulzer_IRE_1955.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Designer%27s_Guide_to_High-Purity_Oscillators_HEGAZI_etal_2005.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Crystal_Oscillator_Design_and_Temperature_Compensation_FRERKING_1978.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/Design_of_Crystal_Oscillators_Sansen_2005.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Balanced_Bridge_Oscillator_HP_Karlquist_1999.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Theory_of_Low_Noise_Oscillators_IEEE_2000.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/4_App_Notes_and_Articles/Crystal_Oscillator_Circuits_KRIEGER_MATTHYS_1992.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/Crystal_oscillator_design_Neubig_1979.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/Development_of_Ultra_Precise_Quartz_Oscillators_IEEE.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/BVA_oscillator_paper_Besson_Emmons_1979.pdf> <http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/Extremely_low_noise_96MHz_oscillator_Neubig_1981.pdf><http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/Phase_Noise_of_Crystal_Oscillators_thesis_Bentley_2007.pdf> (esp. Chs. 5-6)
<http://www.ko4bb.com/manuals/download.php?file=02_GPS_Timing/Time_Nuts_Papers/BVA_oscillator_paper_Besson_Emmons_1979.pdf> Best regards, Charles _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
