Thanks Bill! Are you willing to report your MathCad adventures later on?
Is it possible to follow the experiments with Octave? regards - Henry Bill Dumke schrieb: > Henry, Henning, and David, > > I called Silicon Laboratories today and Kevin Smith was kind enough to run > phase > noise plots for both the CMOS and LVDS versions of the Si570 at an operating > frequency of 112 MHz. Divided by 4 this will result in 28 MHz. The actual > frequency of operation is not that important because phase noise can be > easily > scaled to a different operating frequency. I chose 112 MHz because it was > near > the frequencies I used for the 10 meter prototype crystal oscillator I used > a > while back And phase noise gets better at lower frequencies. > > I will be working on a system analysis of phase noise in Mathcad for > different > modes of operation, and I can get jitter for the digital modes and also > incidental FM noise for the FM crowd on 10 meters which limits the signal to > noise ratio, as well the usual degradation in noise figure. I intend on also > including reciprocal mixing which is usually what clobbers HF transceivers > that > have noisy LOs, like my old Yaesu FT-757GX for example. It didn't work at > all > at a field day site with a lot of strong signals (other transmitters) nearby. > > I have been learning a lot about phase noise at work recently for a project I > have been designing, so this should be fairly straight forward. > -- www.ehydra.dyndns.info
