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A New Method of Phase Splitting in PLL Frequency Synthesis

A new method of frequency synthesis achieves excellent spectral purity, high agility, fine resolution, low power consumption and cost. The principle of the Phase Digital Synthesizer (PDS) is the control signal for the VCO in the PLL is formed by a Multi Frequency-Phase Detector (MFPD) with phase splitting of the reference and VCO signals into a large group of compared signals. The outputs of the partial detectors are then summed to develop the VCO control voltage.


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