Systems and methods for real-time frequency shift detection
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorDuane Younkin
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Abstract
Systems and methods disclosed herein include a correction circuit. The correction circuit may include signal conditioning circuitry that is configured to condition a received reference signal. The correction circuit may include a filter that is configured to filter the conditioned signal received from the signal conditioning circuitry. The correction circuit may include phase detector circuitry that is configured to generate at least one output signal based on measuring a phase shift between a received plurality of input signals. At least one of the plurality of input signals may include the conditioned signal received from the filter.
Claims20
A correction circuit, comprising:
- signal conditioning circuitry that is configured to condition a received reference signal;
- a filter that is configured to filter the conditioned signal received from the signal conditioning circuitry;
- and
- phase detector circuitry that is configured to generate at least one output signal based on measuring a phase shift between a received plurality of input signals, at least one of the plurality of input signals comprising the conditioned signal received from the filter.
A method comprising:
- transmitting a reference signal;
- conditioning the reference signal;
- filtering the conditioned reference signal;
- transmitting the filtered conditioned signal;
- measuring a phase shift between the filtered conditioned signal and a second signal;
- generating an output signal including a frequency correction signal;
- and
- transmitting the frequency correction signal.
An oscillator comprising:
- a mechanical resonator;
- a correction circuit;
- and
- output conditioner circuitry, wherein the correction circuit includes:
- signal conditioning circuitry that is configured to condition a reference signal received from the mechanical resonator;
- a filter that is configured to filter the conditioned signal received from the signal conditioning circuitry;
- and
- phase detector circuitry that is configured to generate at least one output signal based on measuring a phase shift between a received plurality of input signals, at least one of the plurality of input signals comprising the conditioned signal received from the filter, the phase detector circuitry further configured to transmit the at least one output signal to the output conditioner circuitry.
Dependencies are inferred from the claim text.