Abstract: A phase-locked loop system configured to cause an output signal to tend toward a desired output frequency. The phase-locked loop system includes a charge pump system configured to produce a charge pump output based on differences detected between the output signal and the desired output frequency. The phase-locked loop system also includes an oscillator operatively coupled with the charge pump system and configured to produce the output signal based on the charge pump output. The charge pump system is configured to selectively effect proportional control over the output signal by applying correcting pulses along a proportional control path of the phase-locked loop system.

Abstract: A phase-locked loop system, including a voltage controlled oscillator coupled with an error detector in a feedback configuration, so as to produce an output signal having a desired characteristic that is based on a reference signal. The system also includes a charge pump system coupled with the voltage controlled oscillator and configured to produce currents to control phase and frequency of the output signal. The charge pump system includes at least two charge pumps, one being configured to effect more rapid changes in the output signal than the other. This charge pump may be configured to deliver a higher charge pump current than the other charge pump, and/or may be activated intermittently upon detection of cycle slippage or another condition detectable during operation of the phase-locked loop system.

Abstract: A phase-locked loop system configured to cause an output signal to tend toward a desired output frequency. The phase-locked loop system includes a charge pump system and an oscillator operatively coupled with the charge pump system. The charge pump system is configured to selectively effect proportional control over the output signal by producing a correcting pulse having a duration and applying the correcting pulse to a proportional control path of the phase-locked loop system. The charge pump system includes a correcting circuit configured to store a correcting charge corresponding to the correcting pulse, and then output the correcting charge over a period of time that is greater than the duration of the correcting pulse.

Abstract: A phase-locked loop system, including a voltage controlled oscillator coupled with an error detector in a feedback configuration, so as to produce an output signal having a desired characteristic that is based on a reference signal. The system also includes a charge pump system coupled with the voltage controlled oscillator and configured to produce currents to control phase and frequency of the output signal. The charge pump system includes at least two charge pumps, one being configured to effect more rapid changes in the output signal than the other. This charge pump may be configured to deliver a higher charge pump current than the other charge pump, and/or may be activated intermittently upon detection of cycle slippage or another condition detectable during operation of the phase-locked loop system.

Abstract: An array oscillator circuit is disclosed herein. The array oscillator circuit includes a plurality of ring oscillators, each ring oscillator having a plurality of buffer stages for generating output signals on a like plurality of oscillator output ports. Interconnections are provided between each of the plurality of ring oscillators and at least one other of the plurality of ring oscillators such that the plurality of ring oscillators oscillate at identical frequencies and such that the output signals on the each ring oscillator's plurality of oscillator output ports have a phase offset from the signals generated on corresponding ones of the other ring oscillator's oscillator output ports. A multiplexer provides an electrical connection to a selected one of the plurality of oscillator output ports of the plurality of ring oscillators.