Patent ID: 9407246
Filing Date: 2016-08-02
CPC Classification: H03B,H03C,H03K

Claim Text:
1. 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: 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.