Systems and methods for mitigating phase jitter in a periodic signal

An apparatus for providing a periodic signal, the apparatus comprising:

• a first circuit that generates a periodic signal having a frequency that is adjustable between a higher frequency and a lower frequency;
• a second circuit;
• a current-bearing connection that is connected to the first circuit and the second circuit, wherein the current-bearing connection is associated with phase jitter in the periodic signal;
• and
• a control circuit that configures the first and second circuits, wherein in a first configuration, the current-bearing connection carries a greater current, and in a second configuration, the current-bearing connection carries a lesser current, and wherein:
• the control circuit configures the first and second circuits to be in the first configuration when the frequency of the periodic signal is the higher frequency and to be in the second configuration when the frequency is the lower frequency.

A method for mitigating phase jitter in a periodic signal using a signal generator, where the signal generator includes an oscillator circuit and other circuitry, the method comprising:

• generating a first periodic signal at the oscillator circuit, wherein the first periodic signal has a first frequency;
• connecting a portion of the other circuitry to the oscillator circuit;
• switching to generating a second periodic signal at the oscillator circuit, wherein the second periodic signal has a second frequency;
• connecting a smaller portion of the other circuitry to the oscillator circuit if the second frequency is lower than the first frequency;
• and
• connecting a larger portion of the other circuitry to the oscillator circuit if the second frequency is higher than the first frequency.