Method and apparatus for clock phase generation
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United States of America Patent
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Apr 24, 2018
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app pub date -
Jul 11, 2016
filing date -
Jul 11, 2016
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Abstract
A method, non-transitory computer readable medium, and circuit for clock phase generation are disclosed. The circuit includes an injection locked oscillator, a loop controller, and a phase interpolator. The injection locked oscillator includes an input for receiving an injected clock signal and an output for forwarding a set of fixed clock phases. The loop controller includes an input for receiving a phase separation error of the fixed clock phases and an output for forwarding a supply voltage derived from the phase separation error. The supply voltage matches the free running frequency of the injection locked oscillator to a frequency of the injected clock signal. The phase interpolator includes an input for receiving the set of fixed clock phases directly from the injection locked oscillator, an input for receiving the supply voltage from the loop controller, and an output for forwarding an arbitrary clock phase.
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