> Yes, the magic happends between (11) and (12). The integration is > 0 to infinity > and not -infinity to infinity, since we already know it mirrors arround 0. > Mind you that these are twice the power, not twice the amplitude. > The energy at > fc-f will have the same energy and be coherent to the energy at > fc+f, so these > energies add up perfectly. There is a special-case when you can't > argue like > this, but we can look the other way here and pick out the real reference > literature when we need to.
Thanks; you're right, given the integration limits in the Maxim note, their way makes more sense. > > On page 7 of the Zarlink app note, the x2 factor is left > outside the radical > > sign: > > > > RMS = sqrt(sum) * 2 > > Looks like sloppy work to me compared to the Maxim paper, which gives > motivation to the formulas. Agreed. I'll leave the *2 operation inside the radicand. Much appreciate the help! -- john, KE5FX _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
