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US 10,097,188 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.
Claims20
A device, comprising:
- a first frequency source at a first frequency;
- a divider operable to generate an output frequency based on the first frequency source, wherein the output frequency is non-zero;
- a second frequency source at a second frequency, the second frequency being lower than the first frequency;
- and
- a digital signal processor (DSP) operably coupled to the divider and the second frequency source, wherein a phase correction signal output of the DSP is based on a difference between a detected first phase of the output frequency of the divider and a detected second phase of the second frequency, wherein the phase correction signal output is operable to correct a phase error external to the first frequency source and the second frequency source.
2 more elements
A device, comprising:
- a first frequency source 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 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 a phase correction signal output of the DSP is 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:
- generating, using a first frequency source, a first signal at a first frequency;
- generating, using a second frequency source, a second signal at a second frequency lower than the first frequency;
- dividing the first signal at the first frequency to generate a divided first signal, wherein the divided first signal is at a non-zero frequency;
- generating a phase correction signal based on a difference between a phase of the divided first signal and a phase of the second signal;
- and
- applying the generated phase correction signal to a phase rotation module to correct a phase error, wherein the first frequency source is independent of the generated phase correction signal, and wherein the phase error is external to the first frequency source and the second frequency source.
3 more elements
Dependencies are inferred from the claim text.