Phase modulation noise reducer

A phase modulation (PM) noise reducer to reduce phase modulation noise of an oscillator, the PM noise reducer comprising:

• an amplitude modulation (AM) detector to receive a primary oscillator signal from the oscillator and to produce an AM detector signal based on the primary oscillator signal, the primary oscillator signal comprising a first phase modulation (PM) noise;
• a control circuit in electrical communication with the AM detector to receive the AM detector signal, to produce a control signal, and to communicate the control signal to a phase shifter disposed in the oscillator;
• a phase modulation (PM) detector;
• and
• a power splitter in electrical communication with the AM detector and the PM detector, the power splitter being configured:
• to receive the primary oscillator signal prior to the AM detector and the PM detector;
• to split a power of the primary oscillator signal;
• and
• to communicate the primary oscillator signal to the AM detector and to the PM detector,
• wherein the phase shifter is configured to receive the primary oscillator signal and the control signal, and
• the oscillator is configured to produce a secondary oscillator signal in response to the phase shifter receiving the control signal from the control circuit, the secondary oscillator comprising a second PM noise that is less than the first PM noise.