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US 10,382,043 B2Granted
System, method and apparatus for phase hits and microphonics cancellation
AssigneeMaxlinear Asia Singapore PTE LTD
InventorsIgal Yehuda Kushnir, Ido Mordechai Bettesh, Yaacov Sturkovich
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Abstract
A system and method for system, method and apparatus for phase hits and microphonics cancellation. In addition to a first RF synthesizer source, a device also includes a second stable reference signal source that operates at a lower frequency as compared to the RF synthesizer source. The second stable reference signal source is selected with good phase noise characteristics and can be used to correct phase error events.
Claims21
A device, comprising:
- a first oscillator circuit operable to generate a first signal at a first frequency;
- a second oscillator circuit operable to generate a second signal at a second frequency;
- and
- a digital signal processor (DSP) operably coupled to the first oscillator circuit and the second oscillator circuit, wherein the DSP is operable to generate a phase correction signal according to a difference between a detected first phase of the first signal and a detected second phase of the second signal, wherein the phase correction signal output is operable to correct a phase error external to the first oscillator circuit and the second oscillator circuit.
1 more element
A device, comprising:
- a first frequency source operable to generate a first signal at a first frequency;
- a divider operably coupled to the first frequency source to generate an output frequency, wherein the output frequency is non-zero;
- a second frequency source operable to generate a second signal at a second frequency, the second frequency being lower than the first frequency;
- a mixer operably coupled to the divider and the second frequency source;
- and
- a digital signal processor (DSP) operably coupled to the mixer, wherein the DSP is operable to generate a phase correction signal based on a filtering of an output from the mixer, wherein the phase correction signal output is operable to correct a phase error external to the first frequency source and the second frequency source.
3 more elements
A method comprising:
- dividing a first signal at a first frequency to generate a divided first signal, wherein the divided first signal is at a non-zero frequency;
- generating a phase correction signal, in a digital signal processor (DSP), based on a difference between a phase of the divided first signal and a phase of a second signal;
- and
- applying the generated phase correction signal to a phase rotation module, external to the DSP, to correct a phase error.
1 more element
Dependencies are inferred from the claim text.