Phase alignment system and method
AssigneeQUALCOMM Incorporated
InventorsWu-Hsin Chen, Jingcheng Zhuang
Life of this patent
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Abstract
A system for phase alignment includes a radio frequency integrated circuit (RFIC) having a phase locked loop (PLL) circuit and a missing pulse detection circuit, the missing pulse detection circuit configured to detect a missing pulse from a reference clock source and generate a detection pulse signal, and a counter reset circuit connected to the missing pulse detection circuit, the counter reset circuit configured to generate a counter reset signal in response to the detection pulse signal, the counter reset signal configured to establish an absolute time and frequency reference for the PLL circuit.
Claims20
A system for phase alignment, comprising:
- a radio frequency integrated circuit (RFIC) having a phase locked loop (PLL) circuit and a missing pulse detection circuit, the missing pulse detection circuit configured to detect a missing pulse from a reference clock source and generate a detection pulse signal;
- and
- a counter reset circuit connected to the missing pulse detection circuit, the counter reset circuit configured to generate a counter reset signal in response to the detection pulse signal, the counter reset signal configured to establish an absolute time and frequency reference for the PLL circuit.
A method for phase alignment, comprising:
- detecting a missing pulse in a clock signal;
- generating a detection pulse signal;
- and
- generating a counter reset signal to reset a counter in response to the detection pulse signal, wherein resetting the counter establishes an absolute time and frequency reference.
A device, comprising:
- means for detecting a missing pulse in a clock signal;
- means for generating a detection pulse signal;
- and
- means for generating a counter reset signal to reset a counter in response to the detection pulse signal, wherein resetting the counter establishes an absolute time and frequency reference.
Dependencies are inferred from the claim text.