Wide tracking range, auto ranging, low jitter phase lock loop for swept and fixed frequency systems

Abstract From the Canadian patent

The present invention provides a wide tracking range phase locked loop (PLL) circuit that achieves minimal fitter in a recovered clock signal regardless , of the source of, the fitter (i.e. whether it is in the source or the transmission media). The present, invention PLL has automatic harmonic lockout detection circuitry via a novel lock and, seek control logic in electrical communication with a programmable frequency discriminator and a code balance detector. (The frequency discriminator enables preset of, a frequency window of upper and lower frequency limits to derive a programmable range, within which signal acquisition is effected. The discriminator works in combination with, the …