High-precision phase adjustment and measurement system and method based on phase interpolation
A phase adjustment and phase interpolation technology, applied in control/adjustment systems, general control systems, instruments, etc., can solve problems such as large consumption of hardware and firmware resources, and achieve the effect of improving linearity
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[0060] The present invention adopts the phase adjustment module of the high-speed transceiver in the Saussian FPGA to achieve fine output clock phase adjustment. Append figure 2 As shown, the high-speed transceiver includes a phase-locked loop, a phase interpolator, and a divider (Divider). The phase-locked loop output clock is sent to the phase interpolation module, the phase interpolation module supports high-precision phase adjustment for the highest 8.15 GHz clock, the phase movement step can be adjusted, the minimum can be N * f in 1 / 128 of the cycle. Therefore, the phase moving step supported by the phase interpolation module is up to 0.96 picose. If figure 2 Configuration, when the phase value selected by the phase adjustment module is fixed, the final output clock frequency is equal to F in However, its output phase can be accurately regulated. Therefore, if the output clock is used as a new clock reference, figure 2 The configuration structure ultimat...
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